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Biology, 26.06.2019 07:30 makennahudson94
Why do the terrestrial planets lack hydrogen and helium in their atmospheres? a. hydrogen and helium were converted to other compounds as the planets formed. b. hydrogen and helium can't be retained because the planet masses are too small. c. hydrogen and helium were blown away by solar wind. d. hydrogen and helium are present in rings around the terrestrial planets.
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Why do the terrestrial planets lack hydrogen and helium in their atmospheres? a. hydrogen and heli...
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