How does the absence of vegetation affect erosion in what way? ?

Why are common names a problem for scientist?

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."

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