I think its either C or D
After reaching North America, humans migrated to South America.
Volcanoes can release an amount of matter into the atmosphere. The particles will serve as nuclei to help form the water droplets. Following an eruption is usually a heavy rainfall that will encourage plant growth.
The Mississippi river runs through 10 states in total before emptying out in the gulf of Mexico.
1. Mars has a thin athmosphere
2. Its red colour is dues to a big number of iron oxide
3. It has two moons
4. Olympus Mons, a volcano on Mars is also the largest volcano in the solar system
5. Mars is visible from Earth with a naked eye
6. It has around half the diameter of earth
7. Mars is less dense than Earth
