16. Where is the tropical zone? a. near the poles
b. between the polar and temperate zones
c. surrounding the equator
d. near Earth's axis

I believe it is C.

Explanation:

This is because this is where it is hottest and where a lot of the tropics are located.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

50% lit on the left side