The <u>small intestine</u> builds an important barrier against pathogens, but it has to absorb <u>nutrients</u> efficiently at the same time for optimum function.
<h3>What is a pathogen?</h3>
A pathogen refers to living microorganisms that are capable of causing diseases and harm to their host. Thus, they include the following:
Basically, the <u>small intestine</u> has the ability to build an important barrier against pathogens. However, it has to absorb <u>nutrients</u> efficiently at the same time for optimum function of an organism.
Read more on pathogens here: brainly.com/question/27961024
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The process known as differentiation
TT (is T is the letter you're using)
Homozygous means it has the same allele for a trait