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Right now billions and billions of fungi, bacteria and viruses are coating your tongue, scumming up your teeth and flavoring your breath. There are more microbes in your mouth than there are people on earth. Horrible? Maybe. Healthy? For sure Your mouth is home to amazing mix of tiny critters. Because it's wet, warm cave, washed with a constant food supply it's a perfect place for microbes to thrive. Worried? Don't be. In fact, having a good mix of microbes keeps you healthy. So open wide and discover, experiment, observe. Get friendly with your billions of secret micro pals. This book tells...