Oxygen moving from the bloodstream into a cell down a concentration gradient is a form of what? user: oxegen moving from the blood stream into a cell down a concentration gradient is a form of

The two main stages of cell division are called

Which type of organism is a caterpillar

Select the correct answer. which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. c. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated. d. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.