Question

unicellular organisms take in oxygen from 1) air 2) soil 3) water 4) both water and air​

Answer 1

Answer:

unicellular organisms take in oxygen from 4) both water and air

Answer 2

Explanation:

A unicellular organism, also known as a single-celled organism  and single celled organisms takes oxygen from cell membrane. unicellular organism found inpond water. It takes in food from the water .