write a letter to your friend Anil making him aware about the danger spread of covid 19
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Carbon has a valency of four, so it is capable of bonding with four other atoms of carbon or atoms of some other monovalent element. This is known as tetravalency of carbon.Samoa, group of Polynesian islands and islets in the south-central Pacific Ocean about 1,600 miles (2,600 km) northeast of New Zealand
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