Wildlife plays a significant role in the cultures and economies of Alaska Natives.
For many Alaska Native communities, hunting and fishing are deeply ingrained cultural practices that provide sustenance and a connection to the land. Wildlife is also an important source of food security, providing a significant portion of the protein in the diets of many Alaska Native communities.
In addition to being a source of food, wildlife is also an important source of income for Alaska Natives. For example, the subsistence hunting and fishing industries provide a significant source of revenue for many Alaska Native communities, as do commercial fishing and hunting operations.
In terms of culture, wildlife is also seen as a spiritual and cultural resource for many Alaska Natives. For example, traditional stories and beliefs often feature wildlife and the relationships between humans and wildlife. Hunting and fishing also provide opportunities for community bonding and the passing down of traditional knowledge from one generation to the next.
Overall, wildlife is a central and integral part of the lives and cultures of Alaska Natives, providing sustenance, income, cultural identity, and a connection to the land.
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Individuals that are better suited to their environments are more likely to survive and reproduce. This is the basis of what theory?
The theory that individuals that are better suited to their environments are more likely to survive and reproduce is the basis of Charles Darwin's theory of evolution by natural selection.
Natural selection, or evolution, is a theory put out by Charles Darwin to explain how species of plants and animals evolve over time.
It says that:
There is diversity within a species, which means that individuals within a species have unique traits and qualities.For survival and reproduction, some of these features are beneficial or useful, while others are not.A species' members who possess beneficial features are more likely to live longer, breed, and pass those traits on to their progeny.Over several generations, desirable qualities become more prevalent in the population while unfavorable features become less prevalent.As features evolve over time, new species emerge as descendants of one species diverge from their ancestors to the point that they are no longer compatible for mating.Learn more about Charles Darwin's theories here:
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the cardiac notch a. is where the pulmonary trunk rests on the heart. b. is on the medial aspect of the right lung. c. is on the medial aspect of the left lung. d. is a notch on the heart where the coronary arteries originate.
The cardiac notch is a concavity in the lung that formes to accommodate the heart.
What is cardiac notch?
A cardiac notch is formed in the left lung by the front border of the lung and the pleural reflection. The cardiac notch is a concavity that forms in the lung to house the heart.
The cardiac notch exists to provide space for the heart's apex. The apex will extend into this notch due to the heart's slight leftward inclination.
Two lobes make up the left lung. The lower lobe's cardiac notch, a groove, is where the heart is located.
the pericardium-accommodating notch in the anterior edge of the left lung's upper lobe. alternative spelling of incisura cardiaca pulmonis sinistri
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How do multicellular organisms get nutrients?
It takes in food from the water and digests it in organelles known as food vacuoles. Nutrients from the food travel through the cytoplasm to the surrounding organelles, helping to keep the cell, and thus the organism, functioning.
Q2.
(2)
The parts of the blood can be separated from each other by spinning the blood in a centrifuge.
The image below shows the separated parts of a 10 cm³ blood sample.
10 cm3
5 cm3
Plasma
-White blood cells and platelets to ha
Red blood cells
7.5cm3
(a) Calculate the percentage of the blood that is made up of plasma.
The percentage of the blood that is made up of plasma is 55%.
What is blood about?A specific type of bodily fluid is blood. Plasma, red blood cells, white blood cells, and platelets make up its four primary parts. Transporting oxygen and nutrients to the lungs and other tissues is just one of the many jobs blood does. clotting blood to stop excessive blood loss Both liquid and solid components make up blood. Water, salts, and protein make up the plasma, which is the liquid portion.
The majority of the blood is plasma. It accounts for more than half (about 55%) of the entire material. Plasma is a pale yellow liquid that forms when the blood is separated from the rest of it. Salts, enzymes, and water are carried by plasma.
An overview was given since the information incomplete.
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what does it mean by antibiotic resistant bacteria?
Antibiotic-resistant bacteria means when bаcteriа chаnge so thаt аntibiotic medicines cаn't kill them or stop their growth.
Аntibiotics аre medicines used to prevent аnd treаt bаcteriаl infections. Аntibiotic resistаnce occurs when bаcteriа chаnge in response to the use of these medicines. Overuse of аntibiotics is creаting stronger germs. Some bаcteriа аre аlreаdy "resistаnt" to common аntibiotics. When bаcteriа become resistаnt to аntibiotics, it is often hаrder аnd more expensive to treаt the infection.
Losing the аbility to treаt serious bаcteriаl infections is а mаjor threаt to public heаlth. Аntibiotics аre designed to fight bаcteriа by tаrgeting specific pаrts of the bаcteriа’s structure or cellulаr mаchinery.
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The heart is housed within the mediastinum and rests on the , a muscle. diaphragm.
The heart is housed within the mediastinum and rests on the diaphragm.
Position of the heаrt in the thorаx. The heаrt lies in the protective thorаx, posterior to the sternum аnd costаl cаrtilаges, аnd rests on the superior surfаce of the diаphrаgm. The heаrt аssumes аn oblique position in the thorаx, with two-thirds to the left of the midline. It is locаted between the two lungs, which occupy the lаterаl spаces cаlled the pleurаl cаvities. The spаce between these two cаvities is referred to аs the mediаstinum. The heаrt lies obliquely in а division of this spаce, the middle mediаstinum, surrounded by the pericаrdium.
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Proposes that pitch is decoded by firing frequency of hair cells on the basilar membrane is called: _________
Answer:
it’s S
Explanation:
in image, which diagram of a cell wall possesses lipid a/endotoxin responsible for symptoms associated with infection?
Gram-negative bacteria have the type of cell wall that contains the lipid A/endotoxin that causes infection symptoms.
The crystal violet stain that is utilized in the Gram staining method of bacterial differentiation is not retained by Gram-negative bacteria.
A lipopolysaccharide-based outer membrane and an inner cytoplasmic membrane make up the double-layered cell wall of Gram-negative bacteria. Fever, inflammation, and septic shock are all symptoms of Gram-negative bacterial infections that are caused by the lipid A component of LPS, which is also known as endotoxin.
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(complete question)
In the image, which diagram of a cell wall possesses lipid a/endotoxin responsible for symptoms associated with infection?
2. how are anterior pituitary hormones evaluated? indicate the function tests applicable to this case and whether stimulation/suppression tests would be applicable.
The anterior pituitary hormones are evaluated by the Insulin tolerance test (e.g., alternative method of stimulating growth hormone adrenocorticotropic hormone secretion). The suppression leads to hampering diverse physiological functions such as growth, blood pressure and also reproduction.
What are anterior pituitary hormones?The anterior pituitary hormones are chemical messages secreted by this organ. These hormones include:
Adrenocorticotrophic hormone (ACTH)Thyroid-stimulating hormone (TSH)Melanocyte-stimulating hormone (MSH) and Luteinising hormone (LH)Follicle-stimulating hormone (FSH) and Prolactin (PRL)Growth hormone (GH)
Therefore, with this data, we can see that are secreted by the anterior pituitary hormones and affect different body functions.
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Which of these responses is NOT a response consistent with a drop in mean arterial pressure?increased thirstsecretion of aldosteronerelease of renin from the kidneysincreased filtration by the kidneys
Option 4) ,increased filtration by the kidneys is NOT a consistent with a drop in mean arterial pressure.
A blood pressure of less than 120/80 mmHg is considered normal. No of your age, you may make a daily effort to maintain a healthy blood pressure range.
Systemic arterial pressure, sometimes known as "blood pressure," is the term used to describe the pressure measured in the systemic circulation's big arteries in an individual. Systolic and diastolic blood pressure are separated by this value.
What is an arterial normal flow?The fast antegrade flow peaks during the systole, there is a brief reversal of flow during the early diastole, and there is sluggish antegrade flow during the late diastole. These three components make up the typical ("triphasic") Doppler velocity waveform.
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Full Question: Which of these responses is NOT a response consistent with a drop in mean arterial pressure?
increased thirstsecretion of aldosteronerelease of renin from the kidneysincreased filtration by the kidneyswhile on a walk you find something on the ground that fell from a nearby plant. you leave it on stones beside a roaring fire, which causes it to release its seeds. which process has most likely occurred?
The following process has most likely occurred : Resin melted in the outside of certain pinecones, releasing the seed.
Pine cones are more likely to open and germinate when the weather is warm. Some pine cones, such as jack pine, require a quick, hot fire to open and release the seeds.
Female cones (megastrobilus, seed cones, or ovulatory cones) contain ovules that become seeds when fertilized by pollen. The structure of the female cone varies among coniferous families and plays an important role in identifying many coniferous species.
For pine and many other cone-bearing plants, it can take several years for the seeds to reach maturity after pollination.Once the seeds are mature, the cone-shaped scales open and the seeds are blown away by the wind.
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Complete question :
You are given a piece of a plant that is tightly closed. You leave it on stones beside a roaring fire, which causes it to release its seeds. Which process has most likely occurred?
Please choose the correct answer from the following choices, and then select the submit answer button.
Cypress cones charred, breaking a special layer of cells.
Cycad cones caught fire, but the fire-resistant seeds survived.
Ginkgo "fruits" dried out in the heat and split.
Gnetophyte cones cracked in the heat, and the papery seeds were released.
Resin melted in the outside of certain pinecones, releasing the seed.
What can fix nitrogen? plants, soil, bacteria, or fire
Answer:
Plants
Explanation:
Bacteria such as rhizobium and certain blue-green algae present in the soil can fix atmospheric nitrogen and convert into usable nitrogenous compounds, which are used by plants for the synthesis of plant proteins and other compounds.
Answer:
Plants can fixe Nitrogen.
Explanation:
Bacteria like rhizobium and certain blue-green algae in the soil can fix the atmospheric nitrogen. They change into usable nitrogenous compounds.
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i need someone help with this assignment its due tomorrow please help
From the graphic of Predator-Prey on Isle Royale above, we can answer these questions:
19. The greatest moose population is: 2.500 on year: 1995. The wolf population, when the moose is the greatest, is just about 15 wolves.
20. If the moose population decreases, the wolf population will: also decrease due to the lack of major food sources.
21. If wolves were removed from Isle Royale, then: the amount of moose would be increased a lot.
22. The pattern between predator and prey populations is: dependent on each other.
23. The other factor besides the moose population that has influenced the wolf population is: parvovirus.
24. Two factors that may influence the moose population are: ticks and climate.
25. The positive impact on the Isle Royale ecosystem is: to reintroduce wolves. The negative impact is the increasing deforestation and pollution due to tourism.
26. The predator-prey relationship is density-dependent to limiting factors as: they are dependent on the size of the involved population.
How does the predator-prey relationship affect each other’s population?Generally, the prey is fed on the predator. Moose (as prey) is the main source of food for wolves (predator). Wolves decrease the numbers of prey, but if the moose number is decreased due to other factors, the wolf population could also decrease because they lost the main source of their food.
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although they both provide tensile strength and resistance to compression, the extracellular matrix of animals and cell walls of plants differ because the cell walls of plants:
Although both provide tensile strength and resistance to compression, the ECM of animals and cell walls of plants differ because the cell walls of plants: are able to prevent osmotic lysis, are thicker and more rigid.
ECM is the network of macromolecules outside the cells. It is a kind of connective tissue. The composition of ECM consists of glycoproteins like collagen, proteoglycans, and fibronectin. The ECM helps in cell attachment, communication, cell growth, etc.
Cell wall is the outermost layer of cells present in the plant cells. It is a tough and flexible layer. It helps in structural support as well as protection. The cell wall is also involved in building the turgor pressure.
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Why does parallel flow (concurrent exchange) limit the amount of oxygen that can be extracted from water?
The following table describes some biotechnological processes. 1 producing offspring that have identical
In this question, cloning is discussed in the first process and artificial selection is discussed in the process second.
What are the processes used in biotechnology?In the cloning process, the use of parents to produce offspring which is genetically identical to its parents is called a clone.
In the second process, the artificial selection method is used to choose the high-yielding variety of fruits to develop by the biotechnology method. This method is used to produce a higher amount of products and has resistance to disease.
Therefore, in the given table first is cloning and the second is the artificial selection method.
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The given question is incomplete so the most probable complete question is,
The following table describes some biotechnological processes.
Biotechnological Processes
Process Description
1 Producing offspring that have identical DNA as one parent
2 Crossing a high-yielding fruit variety with a high-vitamin variety
Which biotechnological processes are described in the table?
Which biotechnological processes are described in the table?
Both processes describe cloning.
Both processes describe genetic engineering.
Process 1 describes the cloning and process 2 describes artificial selection.
Process 1 describes the artificial selection and process 2 describes cloning.
name a plant tissue area that contained proteins that were transferred to the nitrocellulose but did not contain peroxidase
When exposed with the protein blot stain, the cortex, a form of ground tissue, transmits proteins to the nitrocellulose membrane without the action of peroxidase (Ponceaus S).
The main role of peroxidases in plants is to cross-link the phenolic residues of cell wall glycoproteins and polysaccharides to impart stiffness and strength to the cell wall. Furthermore, plant peroxidase was found to be involved in lignification. A technique used to detect peroxidase activity in various regions of plant tissue is known as tissue printing. Most of the peroxidase activity in plant tissues studied by this technique is restricted to regions such as the epidermis, hypodermis, metaxillum, phloem, and mature outer cortical cells. For roots, peroxidase activity was found to be absent in cortical tissue or cortex and meristem regions.
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most of the primitive phyla of invertebrates obtain their oxygen by diffusion directly from the surrounding is?
Answer:
Explanation:
Most of the primitive phyla of invertebrates obtain their oxygen by diffusion directly from the surrounding water. As invertebrates do not possess specialized respiratory structures like lungs or gills, they rely on simple diffusion to exchange gases with their environment. This is why most invertebrates are found in aquatic environments where oxygen levels are higher, allowing for efficient diffusion of oxygen through their body surfaces.
1. Which one of the following statements about RNA processing is true? RNA splicing can be catalyzed by tRNA Introns are cut out before mRNA leaves from the nucleus RNA polymerase removes exons from the pre-mRNA A pre-mRNA is often much shorter than the final mRNA molecule that leaves from the nucleus 2. Which of the following is an explanation for how there can be differential gene expression throughout a multicellular organism? Some tissues have histones, while other cells do not use histones There are unique sets of genes present in the different tissues of the organisms Different tissues throughout the organism use different genetic coding rules There are unique combinations of transcription factors in different tissues of the organism 3. Where, in a eukaryotic cell, should functional tRNA molecules be located? RNA polymerase Nucleolus Nucleus Cytoplasm
The correct option is C) Exons are cut out before mRNA leaves the nucleus . Gene expression involves two major stages: transcription and translation.
Transcription involves the production of an mRNA molecule which is called a transcript. However, when this RNA transcript is newly made, it is regarded as pre-mRNA. It needs to undergo certain procedures collectively called RNA processing in order to be considered a mature RNA.
In an eukaryotic cell, pre-mRNA undergoes three major steps to become matured mRNA. These steps are:
1. Capping at the 5' end, which involves the addition of a nucleoside to the 5' end of the mRNA molecule.
2. Polyadenylation, which involves adding Adenine nucleotides to the 3' end of the mRNA molecule.
3. Splicing, which involves removal of the non-coding regions of the gene called EXONs from the coding region called INTRON. This process is carried out by an enzyme called SPLICEOSOMES.
RNA processing in eukaryotes occurs before the mRNA molecule leaves the nucleus for the cytoplasm in order to be translated. At the end of the RNA processing, the mature RNA molecule that leaves the nucleus is shorter than the pre-mRNA molecule due to the removal of exons during splicing.
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A mutation the does not cause a change of an amino acid that has an effect in the function of a protein is said to be a________mutation
A.translocation
B.frameshift
C.silent
D.point
Silent mutation does not cause change of an amino acid which has an effect on the function of protein.
What is mutation?Mutation is a process in which genetic material (DNA or RNA) is altered in some way, resulting in a permanent change to the genetic code. Mutations can be caused by environmental factors such as radiation, or can be inherited or spontaneous. They can result in a variety of changes to the physical characteristics of an organism, including changes to its DNA sequence.
Types of mutations include:
1. Point mutations: A single nucleotide is changed, added, or removed.
2. Insertions and deletions: Multiple nucleotides are added or removed.
3. Frame-shift mutations: A nucleotide is added or removed, resulting in a shift in the reading frame of the genetic code.
4. Chromosomal mutations: A whole chromosome is added or removed.
5. Duplications: A section of DNA is repeated.
6. Inversions: A section of DNA is reversed.
7. Translocations: A section of DNA is moved to a different location in the genome.
8. Silent mutations: A nucleotide is changed, but the resulting protein is the same as the original protein.
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a gene has six exons, but only the second and third exons are needed for a resulting protein to function. how many unique but functional mrnas can be made by alternative splicing?
It is possible to create 16 distinct yet useful mRNAs using alternative splicing, thus the right answer is E.
The information from DNA is transferred to the cell machinery that creates proteins by messenger ribonucleic acids or mRNAs. Every cell's nucleus, which has a diameter of barely 10 micrometers, is tightly packed with a three-meter-long double-stranded DNA "manual" that details how to construct and maintain the human body.
Each cell must continuously produce pieces appropriate to its cell type in order to maintain its structure and carry out all of its duties (proteins). Transcription is the process by which a multi-subunit protein called RNA polymerase II (RNAP II) reads DNA inside each nucleus while also creating a "message", known as messenger RNA.
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A gene has six exons, but only the second and third exons are needed for a resulting protein to function. How many unique but functional mRNAs can be made by alternative splicing?
A. 10
B. 64
C. 8
D. 32
E. 16
Scientists classify animals based on their internal and external ____________.
size
height
body structures
sex
bone density
Scientists classify animals based on their internal and external body structures.
How do scientists classify animals?Scientists classify animals based on their physical and genetic characteristics, which are used to group them into taxonomic categories such as:
kingdom, phylum, class, order, family, genus, and species.This system of classification, known as taxonomy, helps scientists understand the evolutionary relationships between different species and provides a framework for organizing the diversity of life on Earth.
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Someone helpp me rq on question 7 pls
Organisms are able to interact with each other in a way that keeps the ecosystem going.
What are ecological interactions among organisms?Ecological interactions among organisms refer to the ways in which different species in an ecosystem interact with each other and with their physical environment. These interactions can be grouped into several categories, including:
Predation: One organism (the predator) kills and eats another organism (the prey).
Herbivory: An organism (the herbivore) feeds on plants.
Competition: Two or more organisms compete for the same limited resources such as food, water, or mates.
Mutualism: A relationship in which both species benefit from their interaction with each other.
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some caddisfly larvae make cases to live in and some make nets to catch prey in the water. group of answer choices true false
some caddisfly larvae make cases to live in and some make nets to catch prey in the water is true.
Trichoptera, an order of aquatic insects, includes caddisfly larvae. To shield themselves from predators and create a stable environment for their growth, certain species of caddisfly larvae build cases around their bodies. Sand, gravel, twigs, leaves, silk, and other materials can all be used to create these cases.
Other caddisfly larvae species make nets out of silk that they use to catch small aquatic critters for sustenance. The caddisfly larva waits inside these nets, which are often fastened to a solid substrate like rocks or plants, waiting for food to become trapped.
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when elaine's hand accidently touched the hot stove, she quickly pulled it away. she didn't even have to think about it; moving her hand seemed to occur automatically. it is unlikely that this could have been possible without the effective operation of which nervous system?
The effective operation of the peripheral nervous system was likely responsible for Elaine quickly pulling her hand away from the hot stove.
The peripheral nervous system is part of the nervous system that lies outside of the brain and spinal cord and includes all of the nerves that control movement and sensation in the limbs and other parts of the body.
When Elaine's hand touched the hot stove, sensory receptors in her skin detected the painful stimulus and sent electrical signals along sensory nerves to the spinal cord. The spinal cord rapidly processed the incoming signals and transmitted a reflex response along motor nerves back to the muscles in Elaine's hand, causing it to pull away from the stove.
This rapid, automatic response is known as the spinal reflex and is a prime example of the peripheral nervous system's ability to control movement and sensation in a quick and efficient manner. This type of reflex response is particularly important for protecting the body from harm and allowing it to respond to environmental stimuli in real-time.
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jerome also had blood work done to confirm the mi. the presence of troponin, or cardiac enzymes such as ck-mb, are a positive indicator of an mi. why is their presence at higher levels in the blood indicative of an mi?
These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
Cardiac enzyme studies measure the levels of enzymes and proteins that are linked with injury of the heart muscle. These include the enzyme creatine kinase (CK), and the proteins troponin I (TnI) and troponin T (TnT). Low levels of these enzymes and proteins are normally found in our blood, but if our heart muscle is injured, such as from a heart attack, the enzymes and proteins leak out of damaged heart muscle cells, and their levels in the bloodstream rise.
Thus, these proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
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How do the pythons affect the population of the other predators, such as bobcats and alligators?
Answer:Pythons cause significant impacts to native prey, such as marsh rabbits, deer, wading birds and even alligators. Their aggressive predation on native wildlife robs native predators, such as panthers, raptors, alligators, and bobcats of their primary food sources.
f
Write a paragraph for a scientific argument
Answer:
Rocks can undergo transformations from one type to another through geological processes. The most common way for this to happen is through heat and pressure. When rocks are subjected to high temperatures and pressures, such as those deep within the Earth's mantle, they may recrystallize into a different form. For example, shale, a sedimentary rock, can undergo heat and pressure to become metamorphic rock such as slate or marble. Another way that rocks can change is through chemical reactions, such as the alteration of igneous rocks through the reaction with surrounding water or air. In some cases, sedimentary rocks can also become compacted and cemented, turning into a different type of sedimentary rock, or even into metamorphic rock. Understanding how rocks change and the processes involved is crucial for geologists as it provides insight into the Earth's history and evolution.
which of these processes results in cells losing their potential to become any type of cell?
These processes results in cells losing their potential to become any type of cell is cell determination.
The cell is the smallest unit of living things. Cells can change in their development to become any more specialized cells such as differentiation of stem cells into skin epithelial cells. However, cells can also lose this differentiation ability.
Determination is a slow process, the potential of a cell is progressively restricted as it develops, and defined states can be inherited through somatic cell division. As the embryo grows, determination causes cells to commit to a certain developmental fate and not to differentiate into different cell forms. This relates to the different selected gene subsets for gene expression in embryonic cells which ultimately limit the cell.
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Which best explains why a pyramid is used to represent energy flow within an ecosystem? 1. Because available energy decreases as you go up2. Because the organisms get bigger3. Because the amount of the organism is more4. Because further of organisms use less energy
A pyramid is used to represent energy flow within an ecosystem because: (1) available energy decreases as you go up.
Ecosystem is the functional unit of the ecology which is made up of both living organisms as well as non-living objects. Both are able to live in the surroundings being interdependent on each other. The non-living factors include soil, water, rocks, weather, etc.
Energy pyramid represents the flow of energy within a food chain in a series. The energy decreases as one goes up in a pyramid because the energy is used by the organisms itself. Thus, energy pyramid always appears upright in position.
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