The earth’s crust is made up of rocks. They are formed in three ways: Sedimentary Rocks Some sedimentary rocks are made only of roc…
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Read moreMillions of years ago marine plants and animals died and settled on the sea floor. They were buried by the sediments which were brought by r…
Read moreA) Humans and animals All humans and animals need salt. We have salt in every cell of our body. Adults need about 250 g in their body to maintain …
Read moreViruses: A Virus is a biological agent that reproduces inside the cells of living hosts. They are smaller than bacteria and cannot be observed with …
Read moreIn this video we will tell you about Coronavirus!!!!
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