I think the answer is B: sediments melt deep beneath the Earth's surface.
Answer:
Continential Tropical
Explanation:
Maritime polar air masses can form any time of the year and are usually not as cold as continental polar air masses. responsible for the hot, humid days of summer across the South and the East. Continental Tropical (cT): Hot and very dry. They usually form over the Desert Southwest and northern Mexico during summer.
You should learn oceanology and also geography,biology.
The correct answer is D. Steel
Canada shares a long land boundary with Alaska and a long boundary with the Arctic Ocean to the North.
It also has a very short boundary with the Pacific Ocean, around Vancouver.
It actually also shares a maritime (water) border with Greenland - although if we discount this kind of border, we can accept Greenland as the correct answer.