If a prey population decreases, then the predator population decreases. The prey population is considered a(n)?

Which measure of an earthquake depends on how close you are to the focus?

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

The earths core is made up mainly of what 2 substances? 2. like an egg, earth has a core, a layer surrounding the core, and a thin, hard outer layer. which layers of the earth match the layers of an egg?