A) The people use large fans to force more oxygen into the atmosphere at that altitude. B) They learn to breath carbon dioxide. C) They move to lower elevations. D) They become accustom to the lower oxygen content.
A) westerlies B) trade winds C) easterlies D) head winds
A) carbon dioxide B) ozone C) carbon free compounds D) chlorofluorocarbons
A) stratosphere B) Exosphere C) troposphere D) ionosphere
A) convection B) evaporation C) conduction D) radiation
A) oxygen B) carbon dioxide C) ozone D) argon
A) melting B) condensation C) evaporation D) convection
A) Exosphere B) ionosphere C) troposphere D) stratosphere
A) stratosphere B) ionosphere C) Exosphere D) troposphere
A) Exosphere B) ionosphere C) troposphere D) stratosphere |