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Sun helps us with its heat ang light.. they help plants make their food.. because without sun there is no living organism... 
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The Sun is the  at the center of the . It is almost perfectly spherical and consists of hot  interwoven with . It has a diameter of about 1,392,684 km (865,374 mi), around 109 times that o, and its mass (1.989 kilograms, approximately 330,000 times the mass of Earth) accounts for about 99.86% of the total mass of the Solar System. Chemically, about three quarters of the Sun's mass consists o while the rest is mostly . The remainder (1.69%, which nonetheless equals 5,600 times the m.
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