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Do you know
- Acid rain is a rainfall with a lower than normal pH.Acid rain can cause reproductive failure in aquatic wildlife, damage vegetation and increase the rate that heavy metals such as lead are leached from the soil
- Air pollution is the introduction of contaminants into the air. Air pollution comes in four main categories: Aerosol; particulates; radiation and gasses. The main types of polluting gasses are: CO, NOx, SOx, VOCs (volatile organic compounds).
- Deforestation is a loss of forests through logging, farming, road construction, ranching and mining. Can cause soil erosion, situation, and loss of critical habitat.
- Ecosystem is a define region, large or small, including all its living organisms. Generally seen as a region in which living organisms have a relatively stable relationship.
- Endemic is naturally occurring in a limited area
- Green house effect is the process by witch gasses, mainly carbon dioxide and water vapor, retain some of the sun's heat and reflect it back to Earth. The gasses allow short wavelength energy from the sun to pass through; but they absorb longer wavelength energy, thereby preventing all of sun's heat from being reflected back into space. Without this natural process, the earth would be considerably colder than it is and unable to support life.
- Habitat is the ecosystem which supports a given organism
- Hazardous waste is liquid or solid waste that posses a risk to the safety or health of people or the environment
- Heavy metals are a group of metals with relatively high atomic weights. Some, like zinc and iron are required by humans in very small amounts. Others like lead, mercury, chromium and cadmium are generally toxic to plant animal life in low concentration. Two non -metals, arsenic and selenium are referred to as heavy metals.
Aluminum is not heavy metal but it is toxic to plants.
- Ozone is a bluish unstable gas made up of three oxygen atoms(O3). At ground level, ozone is formed by the reactions of urban air pollutants in sunlight and oxygen. Also known as photochemical smog, it is a serious respiratory irritant. In the stratosphere, ozone is created when sunlight hits oxygen molecules(O2) and splits them apart. The free oxygen atoms then attach to other oxygen molecules.
- The ozone layer is the layer of ozone in the stratosphere that filters out hazardous ultraviolet-B radiation( Which is linked to increases in the frequency of skin cancer, cataracts in mamals,and demage to crops). Whatever the cause, periodically the layer over the Antarctic becomes so thin that scientist speak of an ozone hole.
- Sanitary landfill is a method of disposing of solid waste by compacting it and burying it in the earth, typically in an excavated site lined with either plastic or clay and equipped with a leach ate collection system.
- Sewage is domestic waste water, including human wastes and water
- Solid waste is waste including, but not limited to, municipal, commercial, institutional, residual or solid waste. including solid, liquid, semi-solid or contained gaseous liquids.
- Sustainable development is the theory that humankind's future well-being depends on conservations of natural resources. Put another way, sustainable development is an approach to progress that meets the needs of the present without compromising the ability of future generations to meet their needs.
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