Create a cost-benefit analysis to compare between two land resources which are coal and gas

As water is cooled from 4 c to 0 c its density

What is the thickest layer of earth called?

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.