How do scientists determine when an era begins and when it ends?

How can you tell were an ocean begins and ends?

What is to temporarily move people away from danger?

How do continental crust and oceanic crust differ?

What occurs an updraft? A. warm air from the west rises B. cool air from the west rises C. warm air from the south rises D. cool air from the south rises

Wich is the method that scientists use to determine the composition of earths layers

According to the International Astronomical Union, which of the following is one of the criteria for an object to classified as a Planet? Select all that apply.

What physical features are the five largest cities in the u. S. Near?

Because of his failed economic plan, Mao Zedong later opened China up to foreign trade. True False

Your friend tells you that our orbit is so special that it is at just the right distance from the sun for us to be at the right temperature for life to flourish. He says that if we were even ten miles closer to the sun, we would burn up.

The suns energy is classified by what