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In this lesson you will learn more about minerals and rocks.
Did you know that about 75% of the land on our planet is covered with sedimentary rock?
The boundaries of tectonic plates can be seen on the seafloor.
The largest contiguous savannah in the world is in Africa. It covers about one-third of the...
Wind, as an external force, plays an important role in shaping deserts.
Water is one of our key natural resources; we must protect it vigorously.
This lesson presents deserts and their flora and fauna.
The weather can be forecast with different meteorological instruments.