Usually plants take up these nitrates, but sometimes rain or irrigation water can leach them into groundwater" (Ward, Mary H.). Because farmers have leveled and modified fields to drain water efficiently, the runoff fertilizer often leads directly to rivers (like the stream shown in figure 1). Too much of this compound can be harmful to our rivers, lakes and oceans. When present in excess, nitrates fertilize algae and aquatic plants, depleting the oxygen and therefore threatening the fish population. The scum of algae negatively affects the water for fishing, swimming, and boating (Minnesot... ... middle of paper ... ...of a Good Thing?
“Water pollution affects plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities.” (Conserve-Energy-Future) Rivers, streams, canals, lakes, and oceans are receptacles for every imaginable kind of pollution. Even though water has the capacity to break down or dissolve many materials, especially organic compounds, pollution in our bodies of water are becoming a large problem. Pollutants such as metals, plastics, and some chlorinated hydrocarbons remain in the water and can make it poisonous for most forms of life. Even biodegradable pollutants can damage a water supply for long periods and the life forms within the water start to suffer damage due to pollution.
Our first reason is that chemical fertilizers contain many elements that are bad for crops. -Chemical fertilizers contain salt that is bad for the crop’s soil. It consumes the soil’s important nutrients and minerals that are normally found naturally in crop’s soil. Many people think that using chemical fertilizer will replenish the lost nutrients, but the fertilizer only replenishes nitrogen, potassium, and phosphorus. A lot of times, phosphorus is drained from the soil into groundwater.