Periods

quickly heat in microwave for short periods of time with mixing in between

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... that heme iron, for example, could be one of these (even though iron is essential for humans, high intake of heme iron from diet for prolonged periods can be harmful). Also, any diet that lacks fibre is linked to increased risk of colorectal cancer. Red meat is just a factor that further increases ...

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... next generation. T = Time: Evolution takes time. Evolution can happen in a few generations, but major change, such as speciation, often takes long periods of time.

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... way of women that are completely developed and they all live in the same house eventually they will all go into sync with ovulation and also their periods all at the same time, anyway that's another story. Hope you find an answer immunogoblin as it is an interesting occurrence.

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... is a factor here also. Evolutionary pressures are often complex and phenotpes often refiect the influence of various selective pressures over long periods of time. If you're looking for a one sentence, "just so" explanation for why there are no green mammals you're likely to be frustrated. ...

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