Answer: because oil is less dense than water and therefore it floats to the surface.
Explanation:
It will increase (A).
When the distance between two masses becomes lower, the gravitational pull by them on each other will increase.
Answer:
it moves when carbon moves from fossil fuels to the atmosphere when fuels are burned when humans burn fossil fuels to power things and then most of the carbon quickly enter the atmosphere as carbon dioxide gas.
Explanation:
B I think because it would have to be 25% so then Aa would be appropriate as of it's recessive.
No beacuse the other layer may be to cold or hot for humans to survive in
