Why do some chemical reactions occur?

Explanation:

Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules

Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products

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explanation:

the marks go by 4s

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101