Hurrwhich events occur when a star is forming ? check all that apply. ▪️the outer layer of the star expands ▪️gravity pulls gas and dust together ▪️a protostar forms as mass increases ▪️a black hole forms as tge core collapses ▪️nuclear fusion begins under high pressure

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.