Well it is important to know the geography of all places but u might want to so u know the language, traditions, and where is where if u r visiting.
By ocean currents is the answer to your question
Answer:
C. Tectonic Plate Theory
Explanation:
The Tectonic plate theory says that the crust is broken into multiple different tectonic plates that move across the surface of the upper mantle.
The answwer is b but not exactly
If your question is literally how long they could remain without water, the answer is 1-2 days with major side effects, and 3-4 with certain death.