The sun is, a star, a planet, The earth's ____________________ layer protects us from the high radiation of the sun, Troposphere, Exosphere, Ozone, The sun does not help plants grow., True, False, The Sun's energy is created by the ______________ fusion of hydrogen and helium, Nuclear, Cellular, Element, The sun gives us light and heat, False, True, The Sun's core is the ____________ layer, coldest, biggest, hottest, The sunlight needs ___________________ to reach Earth, 8 minutes, 8 hours, 3 minutes, The sun is the biggest star on space, True, False, The Sun's age is ___________________ years, 8 billion, 150 billion, 4.5 billion

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