What happens to clay cliffs after heavy rain

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

India's population is made up of percent hindus.

In the late 1990s, brazil’s poor people protested about crowded cities land distribution mining permits industrial pollution