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the molecule into one of several higher excited states, which decay within 10~12 seconds (1 picosecond, ps) to the first excited state with loss of the extra energy as heat. Because pho-toelectron transport and the resulting charge separation occur only from the first excited state of the reaction-center chlorophyll a, the quantum yield—the amount of photosynthesis per absorbed photon—is the same for all wavelengths of visible light shorter (and, therefore, of higher energy) than 680 nm.

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10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

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