Underground mammals, such as the ancestors of moles, are thought to have first evolved as the dinosaurs died out. Which effect of an environmental change does this best illustrate?

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

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One similarity and one difference between an element and a mixture of elements