Environmental hazard | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-15

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Environmental_hazard


00:01:21 1 Chemical
00:02:46 2 Physical
00:03:03 3 Biological
00:03:31 4 Psychosocial Hazards



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SUMMARY
=======
An environmental hazard is a substance, a state or an event which has the potential to threaten the surrounding natural environment / or adversely affect people's health, including pollution and natural disasters such as storms and earthquakes.
Any single or combination of toxic chemical, biological, or physical agents in the environment, resulting from human activities or natural processes, that may impact the health of exposed subjects, including pollutants such as heavy metals, pesticides, biological contaminants, toxic waste, industrial and home chemicals.Human-made hazards while not immediately health-threatening may turn out detrimental to man's well-being eventually, because deterioration in the environment can produce secondary, unwanted negative effects on the human ecosphere. The effects of water pollution may not be immediately visible because of a sewage system that helps drain off toxic substances. If those substances turn out to be persistent (e.g. persistent organic pollutant), however, they will literally be fed back to their producers via the food chain: plankton - edible fish - humans. In that respect, a considerable number of environmental hazards listed below are man-made (anthropogenic) hazards.
Hazards can be categorized in four types:

Chemical
Physical (mechanical, etc.)
Biological
Psychosocial.