researchers determine the population of phytoplankton in an area of the ocean is significantly decreased compared to the previous year. what can they conclude from this observation?
A ) the plankton as a carbon sink and as a carbon source in the area will be greater than expected.
B ) the plankton as a carbon sink and as a carbon source in the area will be less than expected.
C ) the plankton as a carbon sink will be greater than expected, but the plankton asa carbon source will be less than expected.
D ) the plankton as a carbon sink will be less that expected, but the plankton asa carbon source will be greater than expected.