or log in
A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.
Cold and warm fronts are formed where bodies of cold and warm air meet.
It is a sedimentary rock made up of loosely structured, rough grains of rock.
Learn about animal species that emerged in the distant past and stayed mostly unchanged
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for...
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
Short-lived but extremely powerful tornadoes can cause a great deal of damage.
Ázsia és Ausztrália állatvilága a Wallace-vonal mentén különül egy egymástól.