The Wallace line divides the fauna of Asia and Australia.
Sahara sand carries nutrients essential for the Amazonian flora.
The boundary of the permanently frozen region is retracting due to global warming.
Due to its location, the Kalahari basin has a unique climate, flora and fauna.
Mutualism is a relationship between individuals or populations of different species that is beneficial to both parties.
Migrating nomadic shepherds are still living around the Great Rift Valley in East Africa.
Tropical rainforests play an important role in regulating the Earth climate.
The flora and fauna of the savannahs adapt to the climate.
The Great Rift Valley in East Africa was formed as a result of the movement of tectonic plates.
Deserts cover nearly one-seventh of the Earth's land surface.
A cuboid is a polyhedron with six rectangular faces.
This animation demonstrates the different nets of a cuboid and includes a game.