While moving in between areas of land glaciers erode the land around them, this eroded land leads to weathering from the sand and rocks eroded. Example The Grand Canyon
Is it multiple choice? I believe it's brain, but I could be wrong.
According to the Big Bang theory, the universe was once very dense and is now expanding.
Answer:
That there used to be an abundance of plants and animals that lived there. Does this help?
Explanation:
Coal forms from dead things from the past being subjected to high pressure.
Some mutations in living species help them to adapt and help protect them from predtors
