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