Answer:
Mesosphere
Explanation:
The mesosphere starts at 31 miles (50 km) and extends to 53 miles (85 km) high. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere, with temperatures averaging about minus 130 degrees F (minus 90 C).
We are more intellegent than adults
You can get an underwater mountain range like the Mid-Atlantic Ridge. Normal faults occur at divergent boundaries.
Your answer is D good luck!!