Question

What are organisms?

a. building blocks of proteins and origin of life
b. excess energy released by unstable atoms
c. groups of molecules that influence each other
d. the variety, distribution, and abundance of living things in an ecosystem

Answer 1

Organisms can be like cells in the body, or tiny bacteria floating in the air. They are living things.

So the answer is D.

Answer 2

I'd say D but i'm not 100% sure