Answer:
The Mediterranean Sea is Egypt's northern (border). Mountains provide a souther border. These (natural) barriers protected ancient Egypt against invaders. (Without) the Nile River, though, Egypt would (be) desert land.
Explanation:
It would be both 8 and -8.
C: Ecosystem 1
Because there’s not a lot of diversity in only 10 species, making it easy to wipe out the entire population.
If I have the right idea of what you're looking for, I'd say Fixed Ratio Behavior
Answer:
clumped distribution, because you'de have all of the population gathered in a relatively small are.
it's the most common because it provides protection and a mate for reproduction
example: humans, seeweed, cattles, etc.