Plz 20 when a mass of earth falls down a hillside and destroys what's in its path it is ?

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.

Which of the following is not a type of epithelial cell

Why are human population trends difficult to predict?