Several research teams have questioned Daniel Boyce's data that indicates a loss of 500 million tons of phytoplankton a year from Earth's oceans.Is it important for researchers to accurately determine trends in net primary productivity (NPP) in the oceans because
A) there are similarities between the NPP requirements on land and in the ocean.
B) there are no similarities between the NPP requirements on land and in the ocean.
C) the loss of 500 million tons of phytoplankton each year could have a negative effect on the ocean's NPP and all of the ocean life that depends upon it.
D) the loss of 500 million tons of phytoplankton each year could have a positive effect on the ocean's NPP and all of the ocean life that depends upon it.
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