How long did it take the grand cannon to form. and i already know how it was formed

Needed fast 15 points the process of natural selection favors certain characteristics in organisms, while it selects against other characteristics. what would happen if there was zero variation between all of the organisms on earth? a.organisms would evolve to increase variety b.natural selection would operate faster c.less food would be available d.evolution through natural selection would not occur

Which property of soil depends on the size of particles? color odor temperature texture

The african continent is home of the worlds largest desert and longest river . t or f