What can you infer from the fact that there is the same amount of water on the plant
now as there was one billions year ago
A. the total amount of water on earth changes gradually over time.
B. there will be probably be the same over time.
C. amount of water on plant's a billions years from now there have been many fluctuation in water cycle over billions years.
D. There will be much less water on earth one billions of years for now