Kyle is camping in the mount hood national forest, oregon. his campsite is in a wide, u-shaped valley. the valley was most likely formed by
1)a river
2)mass wasting
3)a glacier
4)a mudflow

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids