ENVIRONMENT AND ECOLOGY
Environment - All external conditions, Threatened Species Wild species that is still abundant in its natural range but is likely to become endangered because of a decline in numbers factors, matter and energy living and non-living that affect any living organism or other specified system.
Ecology - Biological science that studies the relationships between living organisms and their environment; study of the structure and functions of nature.
Ecosystem - It is defined as a unit which include all the organisms (biological components) in a given are interacting with the environment (physical component), so that the flow energy leads to a clearly defined trophic structure, biotic diversity and material cycles.
Blome - Terrestrial regions characterised by certain types of vegetation and other forms of life, Examples include various types of deserts, grasslands and forests.
Wetland -Land that is covered all part of the time with saltwater or freshwater, excluding streams, lakes and the open ocean.
Biodiversity - Variety of different species (species diversity), genetic variability among individuals within each species (genetic diversity), variety of ecosystems (ecological diversity) and functions such as energy flow and matter cycling needed for the survival of species and biological communities (functional diversity).
Biosphere Zone of the Earth where life is found. It consists of parts of the atmosphere (the troposphere). hydrosphere (mostly surface water and groundwater) and lithosphere (mostly soil and surface rocks and sediments on the bottoms of oceans and other bodies of water) where life is found. Compare atmosphere, geosphere, hydrosphere.
Wildlife - All free, undomesticated species. Sometimes the term is used to describe animals only.
Threatened Species - Wild species that is still abundant in its natural range but is likely to become endangered because of a decline in numbers.
Ozone - (0,) Colourless and highly reactive gas and a major component of photochemical smog. Also found in the ozone layer in the stratosphere and protect us from ultra violet rays.
Smog - Originally a combination of smoke and fog but now used to describe other mixtures of pollutants in the atmosphere.
Acid Rain - It refers to the precipitation with elevated levels of hydrogen ions or a low pH. When fossil fuel is burnt, oxides are formed in the atmosphere. The oxides formed are carbon oxides, Sulphur oxides and nitrogen oxides. All of these oxides form the acidic solution when they dissolve in water.
Global Warming Warming of the Earth's lower atmosphere (troposphere) because increases in the concentrations of one or more greenhouse gases. It can result in irreversible climate change that can last for decades to thousands of years.
Eco marks - The ministry of environment and forests, Government of India instituted a scheme, that is operating on a national basis and provides accreditation and labelling for household and other consumer products which meet certain environmental criteria.
Coral Bleaching - Coral bleaching occurs when the relations between the coral host and zooxanthallae, which give coral much of their colour, breaks down. Without the zooxanthallae, the tissue of the coral animal appears transparent and the coral's bright white Skelton is revealed.
Sustainability - Ability of Earth's various systems, including human cultural systems and economies, to survive and adapt to changing environmental conditions indefinitely
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