I think it’s A but don’t quote me on that lol
Carbon can make four bonds. Since it is doubly bonded carbon, it means it can make two more bonds. So, two more hydrogen atoms could help in bond formation.

Two H atoms are attached to each carbon.
The bare rock will erode, once it erodes the rock will no longer be bare cause eroded sediment will cover it.
Answer:
There will be weight, there will be volume, there will be height
Explanation:
Carbon dioxide is a noble gas.