Answer:
first and third one
Explanation:
animals need the oxygen they make. and animals eat the plants. if an animal doesnt eat plants it eats somthing that does. sorry for the typos.
All of the chemical reactions are within an organism is known as METABOLISM
A division of order sharing a more specific common attribute. For example, there is a Family of frogs called "Ranidae" More specifically the definition of an order is.
Answer:
In order to maintain the ability to reproduce, also to preform mitosis