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The United States Environmental Protection Agency (EPA) defines point source pollution as any contaminant that enters the environment from an easily identified and confined place. Examples include smokestacks, discharge pipes, and drainage ditches.
The U.S. Environmental Protection Agency (EPA) defines point source pollution as “any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack.” Factories and sewage treatment plants are two common types of point sources.
Point sources discharge pollutants at specific locations through drain pipes, ditches, or sewer lines into standing bodies of water. Examples include factories, sewage treatment plants, underground mines, and oil tankers.
Toxic chemicals releases into air and water, hot water discharges and greenhouse gas emissions are examples of point source pollutants.
Examples of point sources include sewage treatment plants; oil refineries; paper and pulp mills; chemical, automobile, and electronics manufacturers; and factories. Regulated pollutants from point sources include wastes, soils, rocks, chemicals, bacteria, suspended solids, heavy metals, pesticides, and more.
Point Source Pollution
Nonpoint source pollution can include: Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. Oil, grease and toxic chemicals from urban runoff and energy production.
Visible Signs of Non-point Source Pollution The data collected by volunteers at the Sweeps shows that plastic items, in general, made up 70.78% of the recovered debris. These waterways eventually carry debris downstream, and into the ocean.
What is nonpoint source pollution? Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification. Nonpoint source (NPS) pollution, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources.
1 : a source of radiation (such as light) that is concentrated at a point and considered as having no spatial extension. 2 : an identifiable confined source (such as a smokestack or wastewater treatment plant) from which a pollutant is discharged or emitted.
The main difference between point source and nonpoint source pollution is that the point source pollution occurs through a specific, identifiable source whereas the nonpoint source pollution occurs through a combination of pollutants from a large area.
Windmill are used to produce energy by the motion of wind, it is a renewable source of energy and does not cause air pollution.
These sources release pollutants such as oxides of carbon, oxides of sulphur, oxides of nitrogen, and hydrocarbons, ozone, chlorofluoromethanes, etc….Pollutant :
Most ocean pollution begins on land. Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land. One of the biggest sources is called nonpoint source pollution, which occurs as a result of runoff.
Some of the natural sources of air pollution are organic compounds from plants, sea salt, suspended soils and dusts (e.g. from the Sahara). Other natural sources are released during catastrophes such as volcanic eruptions and forest fires.
Pollution can come from several sources: Overflows caused by rain or melting snow. Runoff from yards, fields, and paved surfaces. Discharges from ships and boats.
In fact, Asia’s coastlines are chocking in waste – the region is now home to many of the world’s most polluted beaches.
As excess debris in the ocean slowly degrades over many years it uses oxygen to do so, resulting in less 02 in the ocean. Low levels of oxygen in the ocean lead to the death of ocean animals such as penguins, dolphins, whales and sharks. Excess nitrogen and phosphorus in seawater also cause oxygen depletion.
How can you help our ocean?
So, what can you do about ocean plastic pollution?
A healthy ocean regulates climate and reduce climate change impacts. Ocean currents distribute heat across the globe, regulating temperature and weather. The ocean also absorbs over 90% of the heat and approximately 30% of carbon dioxide emissions produced by human activities.
Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it’s also called smog.
5 Major Outdoor Air Pollutants
The groups most affected by air pollution are people of color, elderly residents, children with uncontrolled asthma, and people living in poverty. Vulnerable populations may experience more health effects because these populations already have higher rates of heart and lung conditions.