Why the food pyramid is wider at the base and very narrow at the top

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

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 is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?