Which type of ecosystem accounts for most of the net primary productivity on earth even though it has a low average net primary productivity?

Which type of ecosystem accounts for most of the net primary productiv

1.	Which type of ecosystem accounts for most of the net primary productivity on earth even though it has a low average net primary productivity?
A.	Tropical rain forest
B.	Desert
C.	Tropical evergreen forest
D.	Oceans
Answer» E.