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)

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

3 answers

Based on the observation that the population of phytoplankton has significantly decreased compared to the previous year, researchers can conclude:

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

Phytoplankton plays a key role in the carbon cycle by absorbing carbon dioxide (acting as a carbon sink). A decrease in phytoplankton population would lead to a reduced capacity for carbon uptake. Moreover, as phytoplankton die and decompose, they can release carbon back into the water and atmosphere, potentially increasing the carbon source. Thus, the overall result would indicate a diminished carbon sink and an increased carbon source.

What can a viewer learn about a subject from a video that they might not learn from reading an interview transcript?(1 point)

the words the subject uses to discuss the topic
the words the subject uses to discuss the topic

how the subject feels about the topic
how the subject feels about the topic

how much the subject knows about the topic
how much the subject knows about the topic

what the subject looks like

A viewer can learn what the subject looks like from a video that they might not learn from reading an interview transcript. Videos provide visual context, including the subject's appearance, body language, and facial expressions, which are not captured in a text format like a transcript.