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explain how ocean and lake dwelling organisms have different problems maintaining homeostasis and salt levels inside their bodies.

I would hazard a guess to say that they aren't as good at it because they don't need to be. In lakes and even the ocean, the state of the environment would stay relatively constant negating the need for homeostasis or regulating salt levels.

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.