Answer:
D
Explanation:
D is mitochondria, which are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.
Answer:
there are called transition metal
light colored frogs becasue they can't survive in this muddy and pulloted pond
The relationship between a leech and a crocodile is an example of parasitism, as the leech feeds on the alligator's blood.