What do you call a substance composed entirely of identical types of atoms?

A. a compound

B. an element

C. a solution

D. a mixture

Changes in organisms is a result of which of the following factors? a human and natures impact b time c both of these

When did world war three end

Why did the United States enter World War II? A. Germany had unleashed unrestricted submarine warfare against American merchant ships. B. The United States came to the defense of its ally, the Soviet Union. C.

the process of evaluating the attractiveness of various segments and then deciding which to pursue as a market.

Rapidly increasing health costs have been a major political concern since at least 1992. suppose the government sets the maximum price for a normal doctor visit at $20 to control rising health costs but the current market price is $40.

Why do you think the churches wanted to forbid people to read certain books?

Which statement best describes the relationship between infrastructure and trade in North Carolina in the early 1800s? Transporting goods between mountains and coastal areas was nearly impossible.

Why are Africa's political boundaries often irrational? Give an example of a country for which this is true.

How did the sea serve as ancient Greece highway

When a child cries when her babysitter is around, the babysitter picks her up and talks to her. because of the attention, the child becomes more likely to cry in the future.