Answer:
Enzymes can only be used once
Explanation:
Enzymes are there forever
Answer:
A bird is a bird, except when it's a nestling, hatchling, or fledgling. As baby birds grow, the specific names that refer to the change.
Answer:
Kidneys
Explanation:
All vertebrates have kidneys. Like the human kidney, they are made up of many nephrons. However, there are differences in the structure and functioning of various vertebrate kidneys that adapt them to the environment in which the animals live.
