What is the difference between food chains and food webs?

1. Food webs show the flow of energy from producers to consumers, and food chains show the flow of energy from consumers to producers.

2.Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.

3.About ten percent of the energy is passed on to the next trophic level in food webs, but in food chains, about ninety percent is passed on to the next trophic level.

4.Heat is lost when energy is passed on to the next trophic level in food chains, but in food webs, heat is not lost when energy is passed on to the next trophic level.

Answer:

The correct answer is - Phase I.

Explanation:

Clinical phase are group of stages in which scientists or researchers  conduct various experiments with a health intervention to get enough evidence for a process to use as a medical treatment. Clinical research is conducted on medical devices, drug candidates, and vaccine candidates.

In the phase I, in this phase intervention takes place in human subjects. These subject usually observed until several half-lives of the drug have passed. This phase is designed to assess the tolerability, pharmacokinetics, safety (pharmacovigilance), and pharmacodynamics of a drug

Answer:

Pure liquid water has a pH of 7 it means pure water is neutral.

Answer:

Punctuated equilibrium

Explanation:

The idea of "punctuated equilibrium" suggests that species will show little to no evolutionary change throughout their history. When evolution does occur, according to this idea, it happens sporadically and relatively quickly compared to the species' full duration on Earth.

Answer: During World War II, Victory Gardens were planted by families in the United States (the Home Front) to help prevent a food shortage. This meant food for everyone. Planting Victory Gardens helped make sure that there was enough food for our soldiers fighting around the world.

Answer:

catabolite activator protein (CAP)

Explanation:

Catabolite activator protein (CAP) is a homodimeric transcriptional activator required for transcription initiation of catabolite-sensitive genes in Escherichia coli. CAP contains a ligand-binding domain at its N-terminus and a DNA-binding domain at its C-terminus. CAP activates transcription by binding at target DNA sites on promoter sequences, thereby enhancing the ability of the RNA polymerase to bind and initiate transcription. CAP binds cyclic AMP (cAMP) to increase CAP’s affinity to DNA and thus activates the transcription of genes for catabolism, such as the lactose (lac) operon genes (the lac operon is a set of genes that encode for enzymes taking part in lactose metabolism).

Answer:

This is because field research experiments provide results that are more realistic or applicable to the general population..

I hope this helps

Answer:

Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.

Question:

Is variation always caused by the surroundings?

Answer:

Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.

Hope it helps you

Answer↷

Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.

➦I hope it seemed helpful to you!

Answer:

uhffgnvcvnmt 6rvrcgrv5rcr5crcrcdc5r5c5d d 5d td td d d d td td d td td td

Answer:

The correct answer is - by burrying underground.

Explanation:

In the ecthermal animals who are also known as the cold-blooded animals. These animals change the heat from the environment and exchange through various ways if the weather is too hot.

Evaporating by tounge, moving to a shady area like under a tree or rocks, burrying the ground for the cooling down their body are few of the ways they maintain their homeostasis during hot weather.

Answer:

Basically an Anti-Condon is a sequence of three nucleotides forming a unit of genetic code in a transfer RNA molecule, corresponding to a complementary codon in messenger RNA.

Explanation:

Codons are trinucleotide units that present in mRNA and codes for a particular amino acid in protein synthesis. Anticodon is trinucleotide units that present in tRNA. It is complementary to the codons in mRNA.

Hoped this helped :)

Answer:

Chemical energy from food molecules (potential energy) may also be transformed to mechanical energy (kinetic energy) when the body moves. In every energy transformation, some energy is given off as heat. This is why the body warms up during different activities like exercising, lifting weights, and even digestion!

Explanation:

Answer:

descent with modification

Answer:

b. is the answer in your question.

Answer:

Explanation:

Below are the three main organs that make up the plant body.

The parts of a plant are labeled. The top green leaf part is labeled A. The stem is labeled B. The part that is underground is labeled C.

What is the main function of the structure that is identified as B in the picture above?

It anchors the plant.

It produces food.

It absorbs nutrients.

The main function of the structure identified as A in the picture is to synthesize the foods of the plants, which is the second option, as plant leaves are essential for the survival and growth of plants, enabling them to produce food, exchange gases, and regulate water balance.

Leaves are the primary site for photosynthesis, the process by which plants use sunlight, water, and carbon dioxide to produce food (glucose) and oxygen. Leaves also play a crucial role in gas exchange, allowing plants to take in carbon dioxide and release oxygen during photosynthesis and release carbon dioxide and take in oxygen during respiration. Leaves are responsible for transpiration, the process by which water is absorbed by the roots and transported through the plant to the leaves, where it is released into the air through tiny openings called stomata.

Hence, the main function of the structure identified as A in the picture is to synthesize the foods of the plants, which is the second option.

Learn more about plant leaves function here.

https://brainly.com/question/4757267

#SPJ7

Answer:

Respiratory bronchiole  

Explanation:

The respiratory bronchioles represent the narrowest airways within the lung, being continuations of terminal bronchioles that have approx. 0.5 mm in size. The epithelium of the respiratory bronchiole is composed of cuboidal ciliated cells and a small number of non-ciliated (secretory) Clara cells. The respiratory bronchioles lead into alveolar ducts composed of smooth muscle and connective tissue (i.e., elastin and collagen), connecting the respiratory bronchioles to the alveolar sacs.

Answer:

they have no cell walls.

Explanation:

Mycoplasmas that belong to Firmicutes are considered as pleomorphic because they have no cell walls in their structure. Mycoplasmas have the following characteristics i.e. the smallest mycoplasmas are 125–250 nm in size, they are highly pleomorphic because they lack a rigid cell wall and instead of cell wall they are bounded by a triple-layered “unit membrane” that contains a sterol in its structure.

Answer:

prezygotic.

Explanation:

In Ecology, when birds use specific songs, coloring, and mating dances to attract mates of their species. This is an example of prezygotic reproductive isolation.

Answer:

46 chromosomes

Explanation:

In mitosis (I think it is this process) the 46 chromosomes in cell A replicate themselves, so there are 92 in total in cell B. Then the chromosomes are pulled apart and the cell splits into 2 daughter cells, leaving 46 chromosomes in each.

Answer:

46

Explanation:

Answer:

C

Explanation:

From reading what the process is, I think the answer should be C. The definition always says that you get energy from a chemical reaction and the products are CO2 and water. That can only mean that you have a hydrocarbon burning.

Chemically it looks like

C6H12O6  +  6O2 ====> 6CO2 + 6H20

Answer:

directional

Explanation:

We define directional selection as a type of natural selection whereby a phenotype is favored in preference to other phenotypes hence, the entire allele in the population will tend to shift in that particular direction .

This is clearly demonstrated in a scenario whereby insects that have very high resistance to an insecticide tend to survive better in an environment compared to other insects that do not exhibit this phenotype.

Having more samples gave him results that were closer to the predicted ratios.Mendel's experiments involved studying the inheritance of traits in pea plants. By carefully crossing different varieties of pea plants and observing the traits of their offspring, he was able to formulate the laws of inheritance that are still used today.

Mendel's experiments involved observing the inheritance of traits in pea plants, which were controlled by genes.

By studying a large sample size of 28,000 pea plants, he was able to obtain data that was much more reliable and accurate. This is because the larger the sample size, the closer the results will be to the expected outcomes or predicted ratios, and any anomalies or errors would be minimized.

This is an important principle in statistics and scientific research, and it helps to ensure the validity and generalizability of the findings.

Additionally, by using such a large number of plants, Mendel was able to minimize the impact of any outliers or anomalous results that might have occurred in a smaller sample. This helped to ensure that his results were as accurate and reliable as possible.

Learn more about pea plants at:

https://brainly.com/question/13912367

#SPJ7

Answer:

To help conserve water or prevent loss via transpiration from the leaves

Explanation:

Some plants are found growing in habitats with little or no moisture content as annual rainfall is very low. These plants are called xerophytic plants. However, despite the low water condition, these plants are adapted to the environment and still survive.

One of their adaptation (structural) is that their leaves are reduced to thorns. Ideally, plants tend to lose water via the stomata on the leaves in a process called TRANSPIRATION. Hence, the leaves of plants adapted to a xerophytic habitat is modified to thorns in order to prevent water loss from the leaves and conserve the water.

Answer:

The answer is, pineal gland

Explanation:

I hope this helps you out!

Answer:

Georges Cuvier.

Explanation:

Georges Cuvier (1769-1832) fue un zoólogo quien propuso que la evolución era el resultado de extinciones producidas por catástrofes a las cuales les sucedían nuevas creaciones con distintas especies. Los ecosistemas con las catástrofes eran destrozados y en los suelos de estos quedaban los  restos de los animales extintos formando parte de los estratos de la tierra.

Answer:

Its D, The cell membrane(also known a the plasma membrane) has a job in which it has to allow passage in and out of the cell. Therefore it can prevent harmful substances from entering the cell. Think of it as security, either allowing you access or denying you depending on if you're a threat

Answer:

D) it prevents harmful substances from entering a cell

Explanation:

The entire purpose of the cells membrane is to contain its organelles, the structures within it and prevent them from getting harmed by outside material.

the device that is used to measure the level of hemoglobin that is saturated with oxygen is known as pulse oximetry