Answer:
D. a higher number of double bonds between carbon atoms in their structures.
Explanation:
D. They help plants get nutrients and water form soill This is called mutualism.
Answer:
Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter. ... A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.
Explanation:
Answer: to study genetics
The answer is A, delta.
I know this because i had this on USATestPrep and got it correct :D