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This video presents the different stages of coal formation.
The Earth’s magnetic North and South poles are located near the geographic North and...
Water is one of our key natural resources; we must protect it vigorously.
We can come across the remains of the Variscan and Caledonian mountain systems almost anywhere...
In summer, monsoon winds bring heavy rainfall from the sea to the mainland.
Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...
The boundaries of tectonic plates can be seen on the seafloor.
Human activity increases the greenhouse effect and leads to global warming.