Question

Help asap…

Why are bacteria necessary to life?

A. because they move and make biologically important elements available to the organisms that need them.

B. because they are food for all organisms

C. because they generate heat which is necessary for life

D. because they provide oxygen which all living things need

Answer 1

Answer: D

Explanation: Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat.