The sleep -wake cycle typically follows a 24 hour cycle and is regulated by the

I think you are looking for Circadian rhythms/regulations. Do you have any options to choose from?

In the air and in the lower fre ah water

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.