If a terrestrial ecosystem has a net primary production of 3000 j/m2 *yr and an ra of 2000, what is the gross primary production for this ecosystem? a. 100b. 500c. 1000d. 5000

Because of its structure the cell membrane is known as a phospholipid ? a. bilayer b. molecule c. fluid d. barrier

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d. a round-trip ride to school and back

The third stage of cellular respiration is (2 points)