a drop of water may spend over 3,000 years in the ocean before moving on to another part of the water cycle
The 0 degrees latitude is called The Equator.
From an overall perspective, A would be the best answer. Since the Nile River has always been one of the biggest rivers in history, it would most likely sustain life for the people. As well as the mediterranean, people for thousands of years relied on the Mediterranean Sea for their food and even their transportation.
Texture
-Hardness
-Luster or shine
-Color/streak