☤ MD ☞✪ What is epigenetics? The science of how our inherited (nature) genes can be altered through lifestyle (nurture) -- including nutrition, exercise, stress, and environment.
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JG Plate Tectonics - Excellent explanation of the evidence for plates despite obvious questions on the age/rate of movement & explains earthquakes, volcanoes, tsunamis in relation to it (where my kids' questions come in)