The seasons are caused by... A. How the earth rotates

B. the earths weather and average climate

C. the distance between the earth and sun

D. the changes in the distribution of light and the tilt of the earth

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.