___________ composed of red and black layers of rock recorded the transition from an oxygen-free atmosphere to an oxygenated atmosphere.
Correct Answer:
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Q1: For each of the four ways that
Q2: Describe how the evolution of life on
Q4: The process of _ added free oxygen
Q5: The removal of carbon dioxide from the
Q6: _ is a form of oxygen that
Q7: _ is the total kinetic energy of
Q8: The energy from the sun that actually
Q9: The bottommost layer of the atmosphere where
Q10: _ occurs when a particular wavelength of
Q11: The property whereby light is reflected to
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