Which of the following citizens are required to sign up for selective services?

All male citizens of the USA  and male immigrants who reside in the United States and are between 18 and 25 years old, must register with the Selective Service.

Explanation:

The Selective Service  is a program used by the US government to create a list of men to call in the case of a national emergency that requires a rapid expansion of the armed forces.

c. taught scientists many new things about the earth, but not other planets.

explanation:

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