You would expect an earthworm to have no exoskeleton because as you see it is very flexible and soft. Organisms with such have body parts that are divided and an earthworm do not have any visible parts on them also having an exoskeleton would not allow an organism to move like an earthworm does.
Answer:
I think from the choices that correct answer would be wool, silkworm cocoon, and cellulose. These are commonly used materials in clothing industry. Also, I don;t think that DNA would be used in making clothes. So, it should be the first option.
-Hope this helped
Sorry for the last answer i was guessing
Explanation:
A scientific law would be your answer.
There are many laws that are defined using formulas.
I hope this helps!
~cupcake
T-g-t-c-g-g-c-a would be the complementary strand