Biologist estimate how long ago species separated from a common ancestor using a technique called.
answers: 1.a molecular clock 2. radiometric dating 3.relative dating 4.stratipraghy

What two advantages do the coastal countries of west africa have over the sahel countriesfertile soil and mineral resources temperatures and terrain human resources and natural resources weather patterns and location

Which modern technology has not made a great difference in the inuit way of life?

Why do farmers in different regions use different farming techniques