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[4] [5] Biological hazards, also known as biohazards, are organic substances that pose a threat to the health of living organisms, primarily humans. This can include medical waste, samples of a microorganism, virus, or toxin (from a biological source) that can impact human health. Biological hazards can also include substances harmful to animals.
Major current environmental issues may include climate change, pollution, environmental degradation, and resource depletion.The conservation movement lobbies for protection of endangered species and protection of any ecologically valuable natural areas, genetically modified foods and global warming.
A natural disaster is the highly harmful impact on a society or community following a natural hazard event. The term "disaster" itself is defined as follows: "Disasters are serious disruptions to the functioning of a community that exceed its capacity to cope using its own resources.
5 Astronomical phenomena. 6 Geological phenomena. ... tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, hurricanes and earthquakes
The 1966 Aberfan disaster; Tuve landslide in Gothenburg, Sweden on 30 November 1977. The 1979 Abbotsford landslip, Dunedin, New Zealand on 8 August 1979. The eruption of Mount St. Helens (18 May 1980) caused an enormous landslide when the top 1300 feet of the volcano suddenly gave way. Val Pola landslide during Valtellina disaster (1987) Italy
A natural disaster might be caused by earthquakes, flooding, volcanic eruption, landslide, hurricanes, etc. To be classified as a disaster, it must have profound environmental effects and/or loss of life and frequently causes financial loss.
The environmental impacts of nuclear power plant disasters such as the Chernobyl disaster, the Fukushima Daiichi nuclear disaster and the Three Mile Island accident, among others, persist indefinitely, though several other factors contributed to these events including improper management of fail safe systems and natural disasters putting ...
Habitat destruction can vastly increase an area's vulnerability to natural disasters like flood and drought, crop failure, spread of disease, and water contamination. [16] [page needed] On the other hand, a healthy ecosystem with good management practices can reduce the chance of these events happening, or will at least mitigate adverse impacts ...
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