Stages of the solar system the sun was about 30 less

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stages of the Solar System, the Sun was about 30 % less luminous than now, allowing Venus and Earth to evolve similarly. When the Sun got more powerful, Venus' surface temperature rose and any water was boiled and evaporated. So, now Venus is quite dry. Earth would have turned out the same way if it had been a little closer to the sun. 4. What do you think might have happened to mammals if the end-of-Cretaceous extinction had not wiped out the dinosaurs? During the Cretaceous Period, mammals certainly did not outcompete the dinosaurs; they survived by being small and inconspicuous. The departure of dinosaurs gave mammals a chance
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to grow larger and to diversify. In the Cenozoic Era, mammals have also benefited from the atmosphere's high oxygen level, which is conducive to a fast metabolism. Unlike reptiles, whose brain sizes have not grown (relative to their body size), mammals have continued to evolve toward larger brain size throughout the Cenozoic Era. No Author. (n.d.) Venus. Oracle ThinkQuest. Retrieved from Resources: Ch. 2 of Visualizing Geology , Virtual Mineral Lab Conduct the minerals lab by clicking on the following link: %5Cvirtual_lab/virtual_lab.html . Refer to the University of Phoenix Material: Mineral Identification Reference Sheet Record your observations and results using the University of Phoenix Material: Mineral Identification Worksheet.
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