Is Mars always in the habitable zone? No, not in conservative estimates. Atmosphere too cold for greenhouse effect, snow and frozen flakes of carbon, less available greenhouse gasses How Venus lost it's water and keeps atmospheric CO2
用Quizlet學習並牢記包含how long have the proportions of the gases in the atmosphere been like today、what are the gases found in today's atmosphere、what are the percentages of the gases in today's atmosphere等詞語及更多內容的單詞卡。