If you were testing how well different automatic carwash is clean cars the control group would be: a. a car that did not go through anymore carwashes b. a car that went through two different carwashes c. car that went to one carwash d. a car that went through all the carwashes

What was apartheid and how did it restrict the rights of non-whites?

What evidence supports geological processes changing the surface of the earth? cutting down forests creates a decrease of habitats. tectonic plates uplift the rocky crust of earth to form mountains. competition in ecosystems creates a decrease in diversity. pollution runoff contaminates a lake.

Which soil layers comprise the topsoil? o horizon a horizon b horizon c horizon