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14. Which of the following is a scientifically accepted theory of Earth's origin?
a) Solid pieces of debris from the Big Bang became rounded due to wind erosion.
b) The sun and planets were condensed from parts of the same spinning cloud of dust and gas.
c) The planets were large asteroids captured by the sun and pulled into its orbit.
d) Cooling debris from the sun was thrown off and began to orbit the sun.
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