1. It's all of the above
2. I think it's b
Well, it did affect the population, because at first California did not have that many people, and during the gold rush, many people from across the world moved to California
Answer:
true
Explanation:
I don't really no the answer
Explanation:
earth is existing more than trillion years ..and has went through lot of changes and will be changing in future too..
the 3 examples of it are very likely to us..
1. global waming...this phenomena is the main cause of bringing rapid changes...
2. tempertaure of sun....*possibility*
3.ending of resources and pollution
