Any change in water quality that harms living organisms or make water unfit for human use.
Comes from point sources.
Comes from nonpoint sources.
Agricultural activities are the leading cause.
Industrial facilities, mining and untreated human(home/industry) sewage.
Worldwide use of plastic water bottles.
Microplastic contamination for aquatic wildlife.
National Academy of Science top pollutants are mercury, sediment from land disturbance/erosion, lead and nutrients that cause oxygen depletion.
Human exposure can cause diseases and cancer.
Wildlife exposure depletes oxygen needed for life, adds toxins to systems, disrupts photosynthesis and food webs, cause excessive growth of algae and other species.
Sources - Living in the Environment, G. Tyler Miller/Scott E. Spoolman, National Geographic Learning 2019
Ground Pollution
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The presence of chemicals in the atmosphere that are able to harm organisms, ecosystems, human-made materials and alter the climate.
Created from natural sources: Wind-Blown dust, solid and gaseous from wildfires, volcanic eruptions and volatile organic chemicals from some plants.
Created from humans: Most occur in industrialized and urban areas where people, cars and factories are concentrated.
Burning of fossil fuels: Power plants and motor vehicles.
Classified into (2) two categories: Primary and secondary.
Primary pollutants: Chemicals emitted directly into the air from natural or human activities high enough to cause harm.
Secondary pollutants: While in the atmosphere some primary pollutants react with one another and/or other natural compounds to form new harmful chemicals.
Caused the US to pass the clean air act of 1970: This far-reaching law puts strict limits on pollution from cars, diesel engines and coal-burning facilities, forcing automakers and other industries to take measures to control pollution.
Is the world's most serious environmental and health problem.
Prolonged, high exposure can get lodged into the lung, resulting in: Cancer, Asthma, Heart Attack and/or Stroke.
Any change in water quality that harms living organisms or make water unfit for human uses:
Such as drinking, irrigation and recreation.
Comes from point sources: Factories, sewage treatment plants, open-pit mines, oil wells and oil tankers discharges pollutants into bodies of water at specific locations like drainpipes, ditches or sewer lines.
Comes from nonpoint sources: Broad areas where rainfall/snowfall wash runoff of pollutants into bodies of water. Runoff of eroded soil, chemicals, fertilizers and pesticides from cropland, animal feedlots, logged forests, construction sites, city streets, parking lots, lawns and golf courses.
Agricultural activities are the leading cause: Sediment from eroded croplands, fertilizers, pesticides and bacteria from livestock, and food-processing wastes.
Industrial facilities, mining and untreated human(home/industry) sewage.
Worldwide use of plastic water bottles: and millions of other products. Much of this plastic can last over 1,000 years and ends up in rivers, lakes and oceans. This harms various forms of wildlife.
Microplastic contamination for aquatic wildlife: tiny particles of broken-down plastic that have contaminated ocean waters and fisheries, many freshwater lakes and fishes, and the world's tap water supplied by surface water sources.
National Academy of Science top pollutants: mercury and its compounds, pathogens from sewers, sediment from land disturbance and erosion, metals such as lead and its compounds and nutrients that cause oxygen depletion.
Human exposure can cause diseases and cancer.
Wildlife exposure depletes oxygen needed for life, adds toxins to systems, disrupts photosynthesis and food webs, cause excessive growth of algae and other species.