Which change would cause the topsoil in West
Virginia to increase in thickness?
1) an increase in slope
2) an increase in biologic activity
3) a decrease in rainfall
4) a decrease in air temperature

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Name the types of burns one can get and which structures of the integument are damaged

What amino acid is coded for by this sequence after the mutation