Answer:
A small area of material moved as a mass would be Mass Wasting!
Explanation:
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I think D, because it talks about prompting more people to migrate.
D. An X-Y coordinate system, with the origin at 0° latitude and 0° longitude
Answer:
three half-lives
Explanation:
Converting 12.5% to decimal gives 0.125
If one half life is 0.5.
0.5*0.5*0.5 gives 0.125
Thus 3-half lives has been elapsed
