Why is a house warmer on the top floor and colder in the basement

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What is the starting point in replication called

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