Safe Drinking Water Act Latino and African American populations are at higher risk of exposure to drinking water contaminants. Contaminants found in the drinking water of such communities include nitrates, coliform, and lead, which have been linked to cancer, reproductive health problems, gastrointestinal illness, and other health problems. One study found that levels of contaminants in the drinking water of two Nebraska Native American reservations were significantly higher than regional contaminant levels. Another study found that Latino residents in Tucson, Arizona, had higher than average levels of contaminants in their drinking water, which were linked to higher rates of cancer and neurological disorders among
Smother crop thus providing green fertilizer. A good smother crop must compete strongly with weeds but minimally with the crop. Smother crops reduce dependence on chemical weed control. Some secondary benefits of such crops are helping nitrogen fixation in soil (if legumes are used) and reducing soil erosion. Alfalfa, rye, buckwheat, sorghum, Sudan grass, foxtail millet, sweetclover, clover and silage corn are some examples of smother crops. Smother crop A smother crop is a thick, rapidly growing crop that is used to suppress or stop the growth of weeds. Smother crops have better root systems that help them compete with weeds for