sentences: the earth 's atmosphere is made of 036 percent carbon dioxide by volume
docs: composition_of_earth is 28_percent_oxygen. earth has atmosphere composition_of_earth is 2.7_percent_nickel. planet_earth has atmosphere earths_atmosphere has nitrogen atmosphere_of_venus is 98_carbon_dioxide. composition_of_earth is 0.4_percent_aluminum. atmosphere_of_mars is 98_carbon_dioxide. composition_of_earth is 35_percent_iron. composition_of_earth is 12.7_percent_nickel.