How do you occur env'tal hazard?
Environmental hazards occur for many reasons. They can occur from disasters, such as fires, or they can occur from pollution in the ground water. Pollutants let into the atmosphere also cause environmental hazards.
Under the HACCP system (Hazard Analysis and Critical Control Point), the three categories of food safety hazards are biological, chemical and physical. Biological hazards are generally bacteria (such as E. coli), viruses (such as Norovirus) and rarely fungus (Fusarium, etc.) Chemical hazards include cleaning agents, anti-microbial interventions and any other substance that may contact either the food directly or a food contact surface like a cutting board. Physical hazards are generally foreign objects, such as…
(A hazard is a potential danger or drawback.) "The main hazard of experimenting with chemicals is the risk of explosion." "Earthquake hazard maps are usually marked with various zones of risk." "Your golf ball may land in a hazard such as a sand trap (bunker) or water." (idiomatic verb) "I am not willing to hazard a guess as to its meaning."