Cells.
Every organ is made up of a lot of cells.
It is A the Answer mate. (:
Answer:
unique properties of water
Explanation:
These processes are a result of the unique properties of water- cohesion and adhesion. and the test said it was the answer.
Answer:
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Explanation: