Answer: Primary producers
Phytoplankton are microscopic marine organisms. These are considered under plants, as they are capable of synthesizing their own food by the process of photosynthesis. Examples includes cynobacteria, dinoflagellates and diatoms. These are abundantly present in marine ecosystem. They are consumed by many marine animals such as fishes and marine mammals.Therefore, they are included in the primary producer trophic level in an ocean ecosystem.
It will take 15 years for Della to be in the same risk of
non-smoking persons in risk of cardiovascular disease. As you quit smoking, the
lungs will start to purify itself, but it will take some time. On the other
hand, it cannot be assured that the lungs may be totally restored, more or less
it would just be clean over a period of time.
Skeletal and Muscular Systems
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The answer for your question b
