How can the ancient environment of an area be inferred from fossil evidence?

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Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

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.