A tree, can be attributed as one of the wonders of the world, which is capable to produce 40 different fruits on its branches. The first such tree w…
Read moreThe earth’s crust is made up of rocks. They are formed in three ways: Sedimentary Rocks Some sedimentary rocks are made only of roc…
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 …
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