A) Liquid water B) Extreme temperatures C) High levels of carbon dioxide D) Lack of atmosphere
A) Nitrogen B) Oxygen C) Carbon Dioxide D) Hydrogen
A) Mesosphere B) Troposphere C) Stratosphere D) Thermosphere
A) Solar flares B) Magnetic reversals C) Lunar phases D) Plate tectonics
A) Meteor showers B) Volcano eruptions C) Ocean currents D) Sea level rise
A) The asteroid belt B) The Kuiper belt C) The outer planets D) The habitable zone
A) Nuclear energy B) Geothermal energy C) The Sun D) Wind energy
A) Mars B) The Moon C) Phobos D) Venus
A) Dermal radiation B) Lunar cycles C) Greenhouse gases D) Increased solar energy |