For the following structural characteristic, decide if it is a characteristic of dna, a characteristic of rna, a characteristic of both dna and rna, or a characteristic of neither dna nor rna.
it is usually a single string of nucleotides.

dna

rna

both dna and rna

neither dna nor rna

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

not only is it colder, it also becomes darker, less salty, and more dense.