Answer:
Mercury is the smallest planet, but its surface gravity is about the same as that of the much larger Mars because Mercury is more dense.
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There are two main forms of return migration: voluntary return and forced return. Data on forced return are usually collected by national and international statistical offices, border protection and immigration law enforcement agencies. The International Organization for Migration (IOM) collects data on assisted voluntary return and reintegration programmes that it implements worldwide.
Stronger people and influence on other places that are weak
