4. explain why and how often we have leap years.
5. at what compass point does the sun appear to rise in the morning?
6. andrew sees the sun reaching its highest pointing the sky, then it begins to
descend. at what time does it begin to descend?

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.