"Gradual evolution" theory would be your answer
this means that those traits that are useful would be passed down, and non-useful traits would die out
hope this helps
Photosysthesis i think that is correct
Answer:
Chemical reactions convert reactants into products. In nonliving systems, the presence of a(n) catalyst allows the reaction to proceed very quickly and have a lower activation energy. In living systems, this functions is carried out by proteins called enzymes.
D chemistry because that is what you need
