Question

which have drop of oil in their cells to keep them float

Answer 1

Answer:

First you should have noticed that when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and therefore it floats to the surface. ... The detergent molecules can form bonds with both water and oil molecules.

Answer 2

Answer:

copepods and diatoms

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