When solutes move AGAINST their concentration gradient (move from LOW concentrations to HIGH concentrations), it must use to power its movement.

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

What factors contribute to the effect an environmental toxin has on the human body?