D. living things as a reservoir
Less than 4% of the world's water is fresh water and 2/3 of it is underground
Toxic substance is a substance that can be poisonous or cause health effects. People are generally concerned about chemicals
Answer:
Mammals have four heart chambers
Explanation:
Answer:
PHOTOSYNTHESIS is a process in which <em><u>green </u></em><em><u>plants </u></em>and other certain organisms convert water, carbon dioxide and other minerals into energy rich molecules and oxygen using the light energy.
hope it helps
have a nice day
