20 CCC Proportion What are the top three sources of U. S. electricity
generation? Estimate the overall efficiency of U. S. electricity
generation. How does this compare to the efficiency for
transportation?

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

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All cells are made of four types of acids, lipids, proteins, and carbohydrates.