Which plant is often used as a soil conditioner

some moss

a fern

some horsetail

or maybe some hornwort

i just put my own little twist in words but the questions are moss, fern, horsetail, and hornwort

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.