What might make it hard for someone to use a dichotomous key? make a list of possible reasons.

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

The response is the basis for vaccination. primary secondary tertiary none of the above

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.