Cells, tree, digestive system, public transportation system, government systems, school systems, families, dog, forest, pond, prairie, communication systems, towns, insect, solar system, weather systems, bird, correctional system, squirrel, soil, etc.
I think its B.all the members of a population ate genetically very similar etc
Answer:
they will only become water if there are no other molecules to react with it.
(does that help)
Explanation: