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Anthropogenic hazard
Anthropogenic hazards are those hazards caused directly or indirectly by human action or inaction. They can be contrasted with natural hazards. Anthropogenic hazards may adversely affect humans, other organisms and biomes and eco-systems. The frequency and severity of hazards are key elements in some risk analysis methodologies.
Hazards may also be described in relation to the impact that they have. Environmental hazards may be very different from human hazards. A hazard only exists if there is a pathway to exposure. As an example the centre of the earth consists of molten material at very high temperatures which would be a severe hazard if contact was made with the core. However there is no feasible way of making contact with the core, therefore the centre of the earth currently poses no hazard.
==Societal hazards==
Societal hazards occur when the behaviour of individuals or groups of individuals give rise to a reasonable apprehension of injury or death
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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