I need help with answering and explaining

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.

To know more about energy pyramid, here

brainly.com/question/2515928

#SPJ4

Answer:

Explanation:

Stomatal density is developmentally plastic.

Scientists classify animals based on their internal and external body structures.

Scientists classify animals based on their physical and genetic characteristics, which are used to group them into taxonomic categories such as:

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.

learn more about animal classification: https://brainly.com/question/24095327

#SPJ1

Heartwood is the old xylem tissue.

In plants, xylem is a type of tissue that moves water and minerals from the roots to the vegetative portion of the plant. The heartwood of a tree gradually develops from the xylem tissue at the stem's center as it gets older.

Heartwood, the active layer of xylem tissue that is in charge of moving water and nutrients, can be distinguished from the sapwood around it. Heartwood, in contrast to sapwood, is no longer involved in the movement of water and minerals and primarily acts as a structural support for the tree.

Since heartwood is dead and contains a lot of chemical compounds that keep pests away, it is often darker in color than sapwood and more resistant to decay and insects.

To know more about heartwood, click here

brainly.com/question/1427629

#SPJ4

Answer:

It would be highly unlikely to discover a food chain containing 10 links.

This is mainly due to the loss of energy that occurs with transitions through the links in the chain.  Almost 90 percent of the energy obtained at one trophic level is lost when being transmitted to the other trophic level ( link in the food chain).

This means that the 10th link in the chain would get so little energy consuming the 9th level organism that it wouldn't be enough to survive.

The 2nd link gets only 10% of the initial energy absorbed by the 1st link in the chain. If the chain is 10 links long, you would lose 90% with each link, leaving next to nothing for the last few links.

The correct option is A ;  The Calvin cycle regenerates NADP+.As water is broken down, light-dependent reactions produce oxygen as a byproduct.

The chemical energy derived from light-dependent reactions drives both the capture of carbon in carbon dioxide molecules and the subsequent assembly of sugar molecules in the Calvin cycle, which occurs in the stroma. The Calvin cycle reactions fix CO2 from the environment using the energy carriers formed during the first stage of photosynthesis.

By combining CO2 and RuBP, an enzyme called RuBisCO catalyzes the fixation reaction. The Calvin cycle is required for light reactions; ATP and NADPH cannot be produced without it. As a result, the two photosynthesis processes are linked.

Learn more about Calvin cycle

https://brainly.com/question/17600594

#SPJ4

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.

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.

The affinity of haemoglobin for oxygen group increases in response to metabolic alkalosis.

Compared to O2, haemoglobin (Hb) has a substantially higher affinity for binding CO (by a ratio of roughly 200). There are two main outcomes from the combination of CO and Hb to generate carboxyhemoglobin (HbCO).

Human haemoglobin has a very strong affinity for carbon monoxide, creating the extremely bright red substance carboxyhemoglobin as a result. Because it has a stronger affinity for people than oxygen, carbon monoxide is an issue.

With the change in altitude from sea level to 20,000 feet, there was no discernible difference in the hemoglobin's affinity for oxygen in the blood of nine men. The amount of haemoglobin produced by the body during altitude acclimation does not seem to differ from that produced at sea level.

To know more about haemoglobin please check the following link

https://brainly.com/question/14946386

#SPJ4

Water molds are both decomposers and parasites that cause powdery mildew in grapes and late potato blight. It is thought that they evolved from unicellular organisms that engulphed and incorporated green algae.

Their chloroplasts have three membranes and photosynthetic pigments that are similar to those found in green algae. The mitochondria of diplomonads and parabasalids are known to be reduced. Scientists have long suspected that a strain of Phytophthora infestans (or P. infestans) was responsible for the widespread destruction of potato crops in Ireland and northern Europe beginning in 1845, resulting in the Irish Potato Famine.

Learn more about decomposers

https://brainly.com/question/28896356

#SPJ4

Explanation:

For 2)

I'd put phenotype 0,2,and 2. percentage would be 0% and the other two as %50 each, since it all equals to %100.

3) is like 0,4,0 where the 4 part is %100 and the other 2 is 0%. but that could just be me.

For 4) his mother most likely has Aa.

5)For the mom and dad, it's probably also Aa for both of them.

6) it would most likely be white. It would be pink if heterozygous.

7)Mom might be Ss and the dad ss.

hope this helped.

The name of the reproductive process involving only one parent is asexual reproduction.

Reproduction is the process of producing offspring. This can be accomplished in two ways: asexual and sexual. The sexual method of reproduction is the advanced and complex form of reproduction requiring the fusion of male and female gametes.

Asexual reproduction is the simpler form of reproduction where a single parent is able to give birth to the young ones. The offspring produced by this method are genetically identical to each other as well as the parent. The different types of asexual reproduction are: binary fission, budding, fragmentation, vegetative propagation, etc.

To know more about reproduction, here

brainly.com/question/14329745

#SPJ4

Answer:

Explanation:

To create a model of the digestive system of a squirrel, you could follow these general steps:

Research the anatomy and physiology of a squirrel's digestive system: Start by researching the different organs and processes involved in the digestion of a squirrel, such as the mouth, esophagus, stomach, small intestine, large intestine, and associated glands.

Determine the scale and level of detail of your model: Decide on the size and level of detail of your model based on the audience and purpose. For example, you could create a small, simple model for young children, or a larger, more detailed model for high school or college students.

Gather materials: Select materials for your model, such as clay, foam, or other craft supplies that can be easily molded and shaped.

Create the structure of the model: Start by forming the general shape and structure of the digestive system, such as the tube-like shape of the digestive tract. Use different materials and colors to represent different organs and structures, such as brown for the stomach and red for the small intestine.

Add details and labels: Once you have the basic structure of the digestive system, add more details and labels to help explain the different organs and processes. For example, you could label the teeth and tongue in the mouth, the different parts of the stomach, or the folds and villi in the small intestine.

Test and refine: After you have created your model, test it to see if it accurately represents the digestive system of a squirrel. Make any necessary adjustments or refinements based on feedback and additional research.

Overall, the key to creating an accurate and informative model of the digestive system of a squirrel is to do your research, plan carefully, and pay attention to details and accuracy.

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.

To learn more about mRNAs from the given link:

https://brainly.com/question/21312423

#SPJ4

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

Option a) An embryo sac. The ovule is the structure inside the ovary. The tiny embryo sac within the ovule of an angiosperm represents the female gametophye generation.

The female gametophyte, also known as the embryo sac, is an oval structure found in the ovule of flowering plants. It is believed that when the haploid megaspore nucleus splits, an embryo sac forms. It has six haploid cells without cell walls and two haploid nuclei.

Megagametogenesis is the process by which the megaspore's nucleus divides and produces an embryo sac or female gametophyte. Hence, "megagametogenesis" is the right response.

Learn more about An embryo sac.

https://brainly.com/question/21940881

#SPJ4

Full Question: Which of these represents the female gametophyte generation of an angiosperm?

- an embryo sac

- an ovary

- an ovule

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

The only difference between cooking brown rice and white rice is the water-to-rice ratio. Because of the outer bran coating, brown rice requires more water and a longer cooking time.

The measurements for cooking white rice for both models are largely the same, but they are presented differently in each manual. The Aroma Digital recommends a rice-to-water ratio of 1 cup to 1.33 cups, which means you should add 1.13 cups of water to the pot for every cup of rice. For grains of any length, a 1:1 water-to-rice ratio can be used (short, medium, or long). Similarly, you can increase the amount of rice in the recipe by substituting 2 cups of rice for the 2 cups of water.

Fill the inner pot of a basic Aroma rice cooker with rice and water. Depending on the model, a basic rice cooker can produce up to 8 cups of cooked rice. 2 cups cooked rice from 1 cup uncooked rice and 1 1/2 cups water, or fill to the water line.

Learn more about rice here: https://brainly.com/question/9530929

#SPJ4

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.

For more information about the diaphragm refers to the link:

https://brainly.com/question/12920059

#SPJ4

Answer: A

they help them reproduce

The earliest technique for examining the living human brain involved the study of a)head injuries.So,correct option is a.

Researchers utilize numerous strategies to concentrate on the brain's structure and capacities.. They take pictures of solid cerebrums and contrast them with infected minds. Likewise, they look at cerebrums taken from people, primates and little warm blooded creatures and attempt to comprehend how spineless creatures' more modest sensory systems work. On a tiny level, they likewise look at neurons.

Some of the techniques by which living brain is examined:

Hence,correct option is a.

To know more about examination of human brain,visit here:

https://brainly.com/question/12720662

#SPJ4

(Complete question) is:

the earliest technique for examining the living human brain involved the study of: answer choices a)head injuries. b)glucose production. c)soft tissue. d)electrical activity.

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

Read more about cardiac notch:

https://brainly.com/question/30022605

#SPJ4

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.

To know more about larvae, click here,

brainly.com/question/2514798

#SPJ4

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.

Know more about Gram-negative bacteria here: https://brainly.com/question/13794411

#SPJ4

(complete question)

In the image, which diagram of a cell wall possesses lipid a/endotoxin responsible for symptoms associated with infection?

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.

For more information on peroxidase , visit :

https://brainly.com/question/8872803

#SPJ4

If you plated an undiluted bacterial culture directly on the plate the colonies would be too close for counting.

A culture of bacteria that have not been diluted will have millions of individual bacterial cells. If an undiluted culture is plated, the bacteria will develop as a lawn on the plate, and it will not be feasible to count the bacteria from these plates since the bacteria will have grown as a lawn. Before plating, the original culture ought to be diluted so that an accurate count of the colonies may be obtained.

It is important to dilute the culture to a point where there are a few hundred organisms per milliliter or to a point where the number of organisms plated onto (or into) an agar medium will be statistically valid in order to determine the actual number of organisms in the tube or culture flask.

You can also learn about bacteria from the following question:

https://brainly.com/question/8008968

#SPJ4

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.  

For more information on pinecones, visit :

https://brainly.com/question/12827293

#SPJ4

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.

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.

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.

Learn more about the predator-prey relationship here https://brainly.com/question/25248999

#SPJ1

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.

To learn more about the peripheral nervous system

https://brainly.com/question/328696

#SPJ4