Water pollution occurs when water is contaminated with chemicals and foreign substances that are harmful to humans, plants and animals. Water pollutants include chemical contamination from waste sites, chemical wastes from industrial discharges, heavy metals such as mercury and lead, sewage waste, food processing waste, fertilizers and pesticides.
Water pollution is a serious ecological threat. Drinking contaminated water is hazardous to human and animal health. When toxic substances dissolve in bodies of water, such as oceans, rivers and lakes, the water becomes polluted. Pollutants tend to lie suspended in the water or deposited on the bed. They degrade the quality of water over time. This results in disastrous effects to aquatic ecosystems. Pollutants even contaminate the groundwater, which poses a serious threat to households that use the contaminated water.
Pollutants are classified into different types, including organic, inorganic and radioactive. Human activities are the main causes of pollution. The major sources of water pollution are industrial waste discharge and city sewage. These are disease-causing agents that carry bacteria, viruses and parasitic worms. Some pollutants are oxygen-demanding wastes that deplete oxygen and cause organisms in the water to die. There are also contaminants that mix with the water supply from soils and groundwater systems that contain agricultural residues and industrial wastes that are disposed of improperly. Contaminants from the atmosphere also enter groundwater systems through rainfall.Learn More
GreenDiary states that driving less, using eco-friendly household products and avoiding agricultural chemicals are three ways to reduce ozone depletion. All of these suggestions would help a person pollute the ozone layer less by limiting that person’s use of toxins.Full Answer >
The causes of pollution are excessive use of natural resources, over industrialization, increase in global population and globalization. The use of chemicals, such as pesticides and weedicides, cause soil pollution.Full Answer >
"Don't Mess With Texas" is perhaps one of the most well-known anti-litter slogans. Examples from other states include "Let's Pick It Up New York," "Oklahoma, Keep Our Land Grand" and "Kansas! Don't Spoil It."Full Answer >
A variety of science fair projects can be done on acid rain, including the effects of acid rain on buildings or the effects of acid rain on the environment. To conduct this type of experiment, acid rain needs to be replicated by combining two tablespoons of vinegar with two cups of water. After the solution is mixed, the pH should be around 4 for the experiment.Full Answer >