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. both historically and presently, substances produced from amphibian glands offer an important source of medicine for humans. amphibians also lower the prevalence of insect-borne diseases by reducing the numbers of insects. in religion, amphibians have often been important symbols, whether in shamanism...
what chemicals are used in fracking? what are alternatives to make fracking less impactful? i've heard that hydraulic fracturing is linked to cancer. is that true? how much water does hydraulic fracturing use? how is groundwater protected during hydraulic fracturing?...