The surface of the Earth is covered by a layer of rock. This layer is called the Earth’s crust. Scientist who study rocks are called geo…
Read moreWhen animals and plants die, their bodies may fall into sediments. Usually, they just decay. But sometimes they can become part of sedime…
Read moreWhat are settlements? Settlements are places where people live. They vary in size. A settlement may have: Just one house. Homes for…
Read moreCoal is a non-renewable fossil fuel that is combusted and used to generate electricity. Coal accounts for about half of the generati…
Read moreRocks do not stay the same forever. They get worn away slowly. Rain, wind, frost and temperature changes can all wear away rocks. Whe…
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Read moreElectricity is our basic need. No, one can spend a peaceful time without it. Nowadays, world is so advanced that we can generate elect…
Read moreAll matter is made up of tiny particles. These particles are much too small to see. These particles are arranged differently in solid…
Read moreThe ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. The ozone layer…
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