The thinnest layer of the earth is

A.) The Crust

B.) The Mantle

C.) The Inner core

D.) The Outer Core.

The correlation between the area of an island and the number of species found there is referred to as: A. species-area relationship. B. latitudinal gradient. C. theory of island biogeography. D. immigration and extinction.

The source of all food energy is the ocean. True False

Which resource is renewable? Oil Gasoline Olive Oil

The heat from the sun ___ water so that it enters the air

Why does the dna rise to the top after adding the solution?

Horizontal stems below the ground are called? rhizomes spines runners roots

Why is upper surface of dicot leaf much darker than the lower surface

What are chemical mechanisms that start a reaction

A person cannot become a problem drinker by drinking beer. a. true b. false

Which is the best description of a galaxy?