Answer:
A. Phytoplankton
Explanation:
They as producers contribute the most. Others do too, but not as much.
Chloroplast is the answer
The population of fish would slowly begin to die out as the deeper the water the less dissolved gasses there are.
Answer:
Two isotopes of the same element have the same number of protons in the nucleus, but differ in the number of neutrons. The nucleon number is equal to the total number of protons and neutrons in the nucleus.
Explanation:
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