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A presentation about threats to the environment.

Published in: Environment
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  1. 1. Pollution has been found to be present widely in the environment. There are a number of effects of this: Human overpopulation Nuclear issues Climate change Water pollution Environmental issues with war Environmental issues with energy Environmental health
  2. 2. In 1800 lived in cities only 3% of the world population. By the end of the 20th century, 47% did so. In 1950, the 83 cities with populations exceeding one million; but by 2007 their number increased to 468, about more than one million.
  3. 3. The Cold War may be over, but this does not mean nuclear weapons have disappeared. Far from it: There are almost 36,000 nuclear weapons in the world, with more than a third of them ready to launch at a moment's notice.
  4. 4. Climate change is caused by factors such as biotic processes, changes in solar radiation received by Earth, plate tectonics and volcanic eruptions. Some human activities have also been identified as major causes of recent climate change, often referred to as "global warming".
  5. 5. Water pollution affects the entire biosphere – plants and organisms living in the water. In almost all cases the effect is damaging not only to individual species and population, but also to the natural biological communities.
  6. 6. The impact of the wars can be seen not only in the social, economic and political situations of these areas but also in the environments in which these wars have been waged. The long years of war have resulted in a radical destruction of forest cover and an increase in carbon emissions and the water supply has been contaminated by oil from military vehicles.
  7. 7. Originally it was used for fire, for light, heat, cooking and for safety. Consumption of fossil fuel resources leads to global warming and climate change. In most parts of the world little change is being made to slow these changes.
  8. 8. Environmental health has been defined in a 1999 document by the World Health Organization as: Those aspects of the human health and disease that are determined by factors in the environment. It also refers to the theory and practice of controlling factors in the environment that can potentially affect health. Environmental health professionals may be known as environmental health officers, public health inspectors, environmental health specialists, or sanitarians.