20. Which of the following is a function of a carbohydrate?
A.
Forms the plant cell wall
B.
Insulation
C
Gene expression
D.
Regulates enzymes

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

Number and variety of living organisms includes genetic, species, and ecological types

Select the correct answer from each drop-down menu proteins are