Which of the following best describes a structural difference between DNA and RNA?

RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.

Explanation:

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production