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2 years ago

The lowest level of the food web is comprised of what

Biology

1 answer:

Savatey [412]2 years ago

6 0

Answer and Explanation :

Plants and algae comprise the lowest level of the trophic system. Called primary producers or autotrophs, plants and other organisms create their own food using photosynthesis.

Furthermore Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemo-synthesis, make up the bottom of the trophic pyramid

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Why would losing just a few dozen aquatic species lead to the end of life in the ocean as we know it?

Ilia_Sergeevich [38]

Answer: It would unbalance the ecosystem.

Due to the fact that if some species die off, the other species that rely on those species for food or protection would loose that food/ protection which may lead to their extinction and their extinction would lead to another extinction and so on.

8 0

2 years ago

In cats, black fur color is caused by an x-linked allele; the other allele at this locus causes orange color. The heterozygote i

Luden [163]

The offspring that will be produced in the cross would have tortoiseshell fur.

<h3>X-linked traits</h3>

In cats, the male is XY while the female is XX.

Assuming that black fur is caused by the allele B and the orange fur is caused by A

A black female will have the genotype $X^BX^B$

An orange male will have the genotype $X^AY^A$

Crossing the two: $X^BX^B$ x $X^AY^A$

Offspring: $X^BX^A$ , $X^BY^A$ , $X^BX^A$ , and $X^BY^A$

$X^BX^A$ = tortoiseshell fur female

$X^BY^A$ = tortoiseshell fur male

More on x-linked traits can be found here: brainly.com/question/11189684

6 0

1 year ago

What is a diffusion through plasma membrane?

yan [13]

Diffusion is the movement of particles from a high concentration area to a low concentration area. Things that can go through a membrane are ions (charged), small polar molecules. Big molecules can't go through the membrane due to its large size and disrupting the membrane. Passive transport is the movement of substances acrpss the cell membrane w/o the use of energy. Active transport needs energy to move substances across a cell membrane.

7 0

2 years ago

Billy thinks evolution is slow and continuous. He believes in

timurjin [86]

Answer:

The correct answer is - Gradualism.

Explanation:

Gradualism is the theory that new species evolved from existing species through progressive, frequently subtle changes as opposed to through unexpected, significant changes. The little changes are accepted to bring about distinguishable changes over long periods of time.

Gradualism is a model that explains the process of evolution that alludes to the minuscule varieties in a life form or in the society that occur after some time to improve a fit for creatures and people in their condition. These varieties permit them to endure and flourish, bringing about the moderate and predictable procedure of progress in the entire populace.

Thus, the correct answer is - Gradualism.

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2 years ago

REALLY EASY!!! JUSUT CAN'T CHOOSE !!!! WILL GIVE BRAINLIEST!!!! AT LEAST TAKE A LOOK!!! ANSWER IF 100% SURE THO!!!

vazorg [7]

B . Excessive commercial fishing
Reason: the other options are good things this is the only bad thing

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2 years ago