T or F?

earth has an iron mantle

What does the structure of a cell allow it to function?

What would happen to the rock cycle if erosion did not uccur

Which factor can decrease the rate of a chemical reaction? a.) low activation energy b.) high pressure c.) low temperature d.) high concentration of reactants

What are similarities between rotation andrevolution?

The part of the universe on which our attention is focused is called

This gland controls all other glands. a. sweat gland b. pituitary gland c. thyroid gland d. salivary gland

Sometimes two or more drugs are so similar in their actions on the brain and the body that as people build a tolerance for one drug, they are simultaneously developing a tolerance for the other. This is known as:

The benefit of measuring the initial rate of a reaction, V0, is that early in the course of the reaction, A) Km is the substrate concentration at which V0 = Vmax. B) The rate of product formation is linear and [S] has not been lowered significantly.

Due to high cost, there are very few wildlife refuges in the U. S true false

Earth is made mostly of metals and rocks. where did this material come from?