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1. Chemical hazard
- These include toxic waste (asbestos, heavy metals, radon gas, arsenic) and pesticides (DDT, PCBs) in the general environment chemicals used in the home and in industrials operations, and preservatives used in foods.
2. Physical hazard
- Physical factors that influence health and well-being range from injuries and deaths caused by accidents, exposure to excessive noise, heat and cold, and to harmful effects of ionising and non-ionising of radiation.
3. Biological hazards
– biological contaminants include various disease causing organisms (pathogens) that may be present in food, water or air, those that can be transmitted by person-to-person contact.
marto answered the question on March 21, 2019 at 06:06
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