Oxygen diffuses from the to the where it enters red blood cells.
a. plasma membrane, alveolus
b. capillary, artery
c. alveolus, capillary
d. artery, plasma membrane

Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.

Several bodily responses are described below. for each response, determine what caused the change in homeostasis. body starts to sweat breathing rate increases amount of saliva produced changes body starts to shiver