The cradle of star is a cloud of hydrogen and dust. There are numerous such cloud in the universe. By the action of external force this cloud get compressed and keep pulling itself together due to the increasing force of attract…
Read moreCactus have an outer waxy layer and their leaves have evolved into thorns to prevent evaporation of water . In the morning, their thorns and outer waxy layer are also able to absorb dewdrops. They store water in their bodies an…
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