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Human Environmental Hazards Essay

851 words - 3 pages

Physical hazards affect populations all over the world, regardless of wealth, location or other factors which tend to differentiate people and cultures from one another. Physical hazards in the environment are naturally occurring events and disasters with the capability of threatening physical safety. Hurricanes, volcanic eruptions, tornados, earthquakes, floods, and landslides are all different types of physical hazards that can have devastating effects on mankind (Library Index, Natural Hazard, 2011). There are primary and secondary effects to these physical hazards. Primary effects are a result of the event or disaster itself. For instance, flood waters damaging houses and buildings, or the collapse of structures due to an earthquake, hurricane, landslide or sinkhole. Secondary effects occur because a primary effect has caused them to happen. An example of a secondary effect is a power outage, or a fire started because of an earthquake. Although we cannot predict a precise location or the magnitude of a physical hazard, some of the consequences can be greatly reduced by strategies such as building design, better land management and regulations, and education on how we can better use our land.
Biological hazards are micro-organisms such as viruses, bacteria, fungi, microscopic, parasitic worms, or other pathogens. These harmful micro-organisms are described as a substance that is naturally occurring which can be harmful to humans, causing disease and illness. These hazardous biological agents can enter the body in different routes. They are inhaled, ingested, or absorbed with most biological agents being inhaled (What is a biological hazard, 2011). Once inside the body, these infectious agents can multiply quickly and may be passed from one person to another. Some can survive outside the body for a long period of time, with the right breeding ground, such as water or food. Some die quickly without the protection of the body. Modes of transmission of some infectious agents are direct transmission through physical contact of an infected person to a non-infected person. Droplets from a cough or sneeze into mucous membranes of another person. In a medical setting, needle sticks are a mode of transmission, or inhaled by airborne transmission. Some infectious diseases or communicable diseases are cholera, tuberculosis, salmonella poisoning, hepatitis, measles, mumps, ringworm, and influenza. More dangerous biological hazards include anthrax, West Nile virus, malaria, Ebola, and typhus. The most simple and the best way to prevent illness are to reduce or eliminate exposure to biological agents. This can be done by simple hand washing, good personal hygiene. These infectious diseases can also be prevented through the use of personal protective wear, gloves and face shields and by taking care in handling of biohazard us materials and their disposal.
The use of chemicals has...

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