Answer:
B.ocean trench
Explanation: When tectonic plates slide against each other one overlaps the other.
Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = 
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =

Hence, the altitude gradient between the two cites = 0.69 m/ mile.
Answer:
Yes, you are correct! C,D and E are correct
Comets are most like planets have elliptical orbits
Light intensity, temperature, and carbon dioxide