Select the correct image. Identify the model that supports the principle of lateral continuity

I need the answer ASAP

Which step is not included in the step approach to calculating the greatest common divisor?

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.

What is referred to as universal solvent due to which factors?