Which symbol and unit of measurement are used for resistance? symbol: R; unit :
symbol: ; unit: R
symbol: R; unit: O
symbol: R; unit: R

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

In psychology, a person who thinks that upbringing and environment are much more important than genes is more on the side of in the nature versus nurture debate.the answer in the blank is letter b which is nature. they are more on the nature and environmental side than the genetic side of species.