ENVIRONMENTAL HAZARDS

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Presentation transcript:

ENVIRONMENTAL HAZARDS

What are environmental hazards? EPA-Environmental Protection Agency monitors levels of pollutants Pollutants in our air, land, and water that can affect our health What are environmental hazards?

Estimated that 50,000 to 120,000 people die prematurely each year EPA has identified 5 major air pollutants AIR POLLUTION

AIR POLLUTANTS HEALTH CONCERNS POLLUTANT Asthma, pneumonia, bronchitis Asthma, bronchitis, decreased lung function, premature death Poisonous, can harm people with heart disease and affects the central nervous system, fatal in large amounts Ozone , Ground- level Ozone (smog) Particulate Matter (PM): dirt, dust, soot, smoke, liquid droplets in air Carbon Monoxide (CO): colorless, odorless gas formed when carbon in fuel is not completely burned AIR POLLUTANTS

AIR POLLUTANTS CONT. HEALTH CONCERN AIR POLLUTANT Respiratory illnesses, aggravates heart & lung diseases Causes or triggers serious respiratory problems Sulfur Dioxide: gas that dissolves in water to form acid, reacts with other gases in air to form harmful particles Nitrogen Oxides: group of highly reactive gases AIR POLLUTANTS CONT.

INDOOR AIR POLLUTANTS HEALTH CONCERN Lung cancer AIR POLLUTANT Damage to brain, liver, kidneys & nerves Asbestos: fibrous material that has fireproof properties Lead Radon: odorless, radioactive gas INDOOR AIR POLLUTANTS

LAND AND WATER POLLUTION Wastes from human activity can pollute our land and water Many wastes are biodegradable Hazardous waste: explosive, corrosive, highly reactive, or toxic to humans or other life forms Pesticides can cause eye & skin irritations, damage to nervous or endocrine systems, Water pollution is sometimes caused by illegal dumping, but most surface contamination is caused by polluted runoff Unclean water can cause cholera, typhoid, diarrhea, dysentery, intestinal worms LAND AND WATER POLLUTION