HELPPP ASAP Sound waves move the fastest through which medium?
O water at high temperatures
O water at low temperatures
O air at high temperatures
air at low temperatures

What happens when the cell copies its chromosomes

Contrast how pollination is different among gymnosperms and angiosperms.

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.