<span>A buffer is able to resist pH change because the two components (conjugate acid and conjugate base) are both present in appreciable amounts at equilibrium and are able to neutralize small amounts of other acids and bases (in the form of H 3O + and OH -) when the are added to the solution.</span>Feb 7, 2016
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Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes.
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from the sun
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producers get light energy from the sun
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It just seems like you're supposed to give four pieces of evidence of natural selection. If you're still confused, you can always ask your teacher.
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