Because it was a very unexpected event and they didnt have the tech to forecast it
Answer:
Layers that are less dense, such as the crust, float on layers that are denser, such as the mantle. Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust. This is partly why the continents are at a higher elevation than the ocean floor.
Explanation:
Answer:
C.would be the most bestest answer
Explanation:
recycling is good, riding bikes is good instead of cars and emissions from them, and planting is excellent of course because your giving back to the environment.
so that leaves C :)
