Not sure why that's an interesting one maybe it's a good thing to look it up on Google or something
Since the small population is, well, smaller, it's clear enough to see that the genetic variation among that population won't be as prevalent as it will in the larger population. The larger population simply has more genes to choose from, of course.
You can look it up on Google bro
The ability of water to hold more heat than land keeps the temperature on Earth on a moderate level.
