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Transgenic plants
Transgenic plants are plants that have been genetically engineered, a breeding approach that uses recombinant DNA techniques to create plants with new characteristics.They are identified as a class ... > more -
Tropical cyclone
A tropical cyclone (also referred to as a tropical depression, tropical storm, typhoon, or hurricane depending on strength and geographical context) is a type of low pressure system which generally ... > more -
Cyclone Tracy
Cyclone Tracy was a tropical cyclone that devastated the city of Darwin, Australia, from December 24 to December 25, ... > more -
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They also are the deepest parts of the ocean floor. Trenches define one of the most important ... > more -
Effect of Hurricane Katrina on New Orleans
The effect of Hurricane Katrina on New Orleans was catastrophic and long-lasting. The storm, which was the costliest hurricane as well as one of the deadliest natural disasters in U.S. history, made ... > more -
Global Positioning System
The Global Positioning System, usually called GPS, is the Earth's only fully-functional satellite navigation system. A constellation of more than two dozen GPS satellites broadcasts precise timing ... > more -
IPCC Third Assessment Report
The IPCC Third Assessment Report is a product of the Intergovernmental Panel on Climate Change, which is based in Geneva Switzerland, and was established in 1988 by two United Nations organisations, ... > more
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