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noun. movement of air (from a high pressure zone to a low pressure zone) caused by the uneven heating of the Earth by the sun. Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants.
Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals and plants. It can even damage buildings. Pollutants in the air take many forms. They can be gasses, solid particles or liquid droplets. Sources of Air Pollution. Pollution enters the Earth's atmosphere in many different ways.
Marine pollution is a growing problem in today’s world. Our ocean is being flooded with two main types of pollution: chemicals and trash. Chemical contamination, or nutrient pollution, is concerning for health, environmental, and economic reasons.
Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today. Today, most of the smog we see is photochemical smog.
Impervious surfaces, or surfaces that can't absorb water, increase runoff. Roads, sidewalks, and parking lots are impervious surfaces. Materials as diverse as car-washing soaps, litter, and spilled gas from a gas station all become runoff. Reducing Runoff. Runoff is a major source of water pollution.
Overview. When asked what water pollution is, most students can readily explain pollution as trash thrown away by humans that enters our water. Students can readily identify items visible to the naked eye, such as cigarette butts, plastic bottles, and bags.
The air pollutants escaping from the . landfill can also cause respiratory problems in people who live close to the landfill. And if the leachate leaks from landfills, it can bring toxins from the landfill into nearby groundwater supplies. Studies have shown that landfills are more often constructed near low-income neighborhoods and communities ...
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
Light Pollution. People all over the world are living under the nighttime glow of artificial light, and it is causing big problems for humans, wildlife, and the environment. There is a global movement to reduce light pollution, and everyone can help.
Air pollutant emissions have an effect on human and environmental health. Particulate emissions (the visible pollutants) can be inhaled into the nose and lungs. The smallest particles can cross the alveolus-capillary barrier and make their way into the bloodstream.