<span>prokaryotic cells do not have a nucleus and eukaryotic cells do.
- prokaryotic cells lack some organelles and eukaryotic cells do not.
- prokaryotic cells are not found in humans and eukaryotic cells are
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Marine biologists study changes in the ocean. so they will look at the chemical composition of deep waters and see how consecrated the oxygen is. They will also study the movements of the plates because when planted move it usually makes new food for deep life
they will also check animal concentrations in certain areas.
Another thing they do is track animal movements. this could be by putting a tracker on a whale or a shark or anything and watching its depths it goes or watching the distance it goes in a day.
