Answer is A
(a brainliest would be appreciated)
Phytoplankton contribute positively in the oceanic ecosystem as they are a source of food for oceanic animals. Moreover, they remove carbondioxide from the carbon cycle and utilize it for the process of photosynthesis.
Answer:
All living things are organized into groups by scientists as they are identified. ... Different scientists use various systems of classification to organize all living things into groups. Overall, the reason scientists classify living things is to understand the relationships between different organisms.
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Answer:
The cell membrane is the border control and decides what particle can enter and exit the cell.
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