Answer:
Land and Water contamination.
Explanation:
Answer: The rock that is made up of ancient coral is limestone
Answer:
Ummmmm... Isn't that a test?
Explanation:
b. a valley
c. a mountain
d. a hill
Answer:
b. a valley, can be called as a depression and its naturally lower than the surroundings, of a mountain or a hill or the plateau.
Explanation: