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  • 1. Open Ended
    30 seconds
    1 pt
    When chemists say that a planet's upper regions are reduced,they mean that these regions
  • 2. Open Ended
    30 seconds
    1 pt
    A planet in our solar system whose composition resembles that of our Sun is:
  • 3. Open Ended
    30 seconds
    1 pt
    On which of the planets (other than Earth) could a human being step out of a spacecraft and survive without any protective gear (special suit, oxygen tanks, etc)? Group of answer choices