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A biological hazard, or biohazard, is a biological substance that poses a threat (or is a hazard) to the health of living organisms, primarily humans. This could include a sample of a microorganism, virus or toxin that can adversely affect human health. A biohazard could also be a substance harmful to other living beings. [a]
A disaster hazard is an extreme geophysical event that is capable of causing a disaster. 'Extreme' in this case means a substantial variation in either the positive or the negative direction from the normal trend; flood disasters can result from exceptionally high precipitation and river discharge, and drought is caused by exceptionally low ...
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.
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 December 2024. Event resulting in major damage, destruction or death For other uses, see Disaster (disambiguation). Ruins from the 1906 San Francisco earthquake, one of the worst disasters in the history of the United States A disaster is an event that causes serious harm to people, buildings ...
Chemical hazards typically found in laboratory settings include carcinogens, toxins, irritants, corrosives, and sensitizers. Biological hazards include viruses, bacteria, fungi, prions, and biologically derived toxins, which may be present in body fluids and tissue, cell culture specimens, and laboratory animals.
An environmental disaster or ecological disaster is defined as a catastrophic event regarding the natural environment that is due to human activity. [2] This point distinguishes environmental disasters from other disturbances such as natural disasters and intentional acts of war such as nuclear bombings .
Biology portal; Subcategories. This category has the following 4 subcategories, out of 4 total. ... Pages in category "Biological hazards" The following 25 pages are ...
Biological warfare, also known as germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war. [1]