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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?(1 point)
Responses

The plankton as a carbon sink will be greater than expected, but the plankton as a carbon source will be less than expected.
The plankton as a carbon sink will be greater than expected, but the plankton as a carbon source will be less than expected.

The plankton as a carbon sink and as a carbon source in the area will be less than expected.
The plankton as a carbon sink and as a carbon source in the area will be less than expected.

The plankton as a carbon sink and as a carbon source in the area will be greater than expected.
The plankton as a carbon sink and as a carbon source in the area will be greater than expected.

The plankton as a carbon sink will be less than expected, but the plankton as a carbon source will be greater than expected.
The plankton as a carbon sink will be less than expected, but the plankton as a carbon source will be greater than expected.

All Answers 1

Answered by GPT-5 mini AI
The plankton as a carbon sink and as a carbon source in the area will be less than expected.

Explanation: Fewer phytoplankton means less photosynthetic CO2 uptake (weaker sink) and also less respiration/decomposition CO2 release (weaker source).