With , organisms may be unable to breed because of physical characteristics, location, habitat, or even differing courtship behaviors.

Closing a ring restricts the rotation around individual car bon carbon bonds hope it will you !

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.