Earths average density is less than the density of water

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

Solve for r in the formula v = ir, when i = 5 and v = 15.

Look at the photo i can’t do geography