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