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<span>Presence of oxygen means that the organisms are not anaerobic so the answer is D. algae. Eukaryotic and prokaryotic cells can be anaerobic meaning that they live in circumstances where there's no oxygen. Algae were the first that required oxygen to thrive. Cyanobacteria are like other bacteria parts of the prokaryotic cell type.</span>
The freezing water would sink to the bottom and freeze the lake water from the bottom up.
It can result in either hypothermia (too cold) or hyperthermia (too hot) and eventually leads to death
