Add a brief description of stem cell differentiation my assignment is due in 15 minutes PLS HELP!!

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

Give examples of selective advantage of organism’s body part/organ

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.