These subs are useful in studying the ocean floor, where it is so deep that divers would be crushed by the water pressure. For example, research submersibles are used to study shipwrecks like the RMS Titanic.
The first answer would be when charged particles from the sun hit the Earths atmosphere and turn into electrons.
Then your next answer is the convection of the heat is similar to the suns.
I hope this helps you out.
Answer: mantle and sillicates
Explanation:
Plants and trees absorb the carbon and make oxygen with it.
Answer:
D. Above the Arctic Circle
