Near a stream's source, a stream erodes a piece of rock from its streambed. as the rock is carried down the stream, how will its size and shape change? explain.

Shi Huangdi unified China. What are some of the ways he accomplished this?

Which layer of Earths atmosphere merges with the vacuum of space?

What would happen if there was zero variation between all of the organisms on Earth?

Choose three possible pollutants to ground water. fertilizer/chemicals trees animal feces oil/gas spills rocks

Where do you find the subject of a map

What does friction of distance refer to? how is the concept of distance decay related to this?

How do you know the worst shake of an earthquake has passed?

What influences the level and type of a country's government?

Which statements about tornadoes are true? Check all that apply. About 12,000 tornadoes hit the United States every year. A tornado looks like a funnel. Tornadoes are deadly atmospheric storms that cause millions in damages each year.

Which describes how Islam came to exist in Africa? A. Arabs brought it in the 8th century. B. Christianity started in Africa. C. Europeans brought it within the last few hundred years. D. Southeast Asians brought it in the 14th century.