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How does natural selection help a species diversity and survive?

Long term exposure to waves can cause sunburns and skin cancer.

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

The type of fossil where the name literally means "turning to stone".