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2. doctors in india and china are famous for their knowledge of medicinal plants , but healers in many countries all over the world use natural medicines . many modern drugs come from a few of the thousands of plants with medicines uses . for example , aloe vera is good for the skin . it helps minor burns such as sunburn . camomile and sage teas are good for stomach problems . mint or ginger teas often relax people .
there is new interest in natural medical all over the world . scientists want to learn more about medical plants and their uses . The World health organization (WHO) has a program to study natural medical in many countries .
for hundreds of years , native healers used plants to help the sick . natural medicines , such as the opium poppy or the outside bark of the cinchona tree from south america , were common . then in the 1800
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