Create an account
Global Climate Change
The changes in the global patterns of rainfall and temperature, sea level, habitats and the incidence of drought, floods and storms resulting from changes in the earth's atmosphere, believed to be mainly caused by the enhanced greenhouse effect.
The Greenhouse Effect
The process by which certain gases (water vapour, carbon dioxide, methane and chloroflurocarbons (CFCs)) allow short-wave radiation from the sun to pass through the atmosphere and heat up the earth, but trap an increasing proportion of long-wave radiation from the earth. This radiation leaves to a warming of the atmosphere.
The Enhanced Greenhouse Effect
The increasing amount of greenhouse gases in the atmosphere as a result of human activities, and their impact on atmospheric systems, including global warming.
A sever reduction in the quality of soils, often through soil erosion, salinzation or soil exhaustion (loss of soil fertility).
Physical Water Scarcity
Lack of availability water where water resource development is approaching or has exceeded unsustainable levels; it relates availability to demand and implies that arid areas are not necessarily water scarce.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together