Answer:
methane (CH4) i'm not completely sure sorry if its wrong.
Explanation:
Answer:
D. Fossils of species that no longer exist but are ancestors of current species have been found in rock layers.
Explanation:
Answer:
To see land elevation or underground elevation.
Explanation:
You can use it to know what it under the ground before digging if you need a space to construct a building or parking. Or perhaps, even when building a house.
I think the answer would be d
Answer:
812
Explanation:
You just want to multiply it by 100.