3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each characteristic could be affected by a human activity

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?

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.