A) the whole mass of air surrounding the Earth B) ground level smoke and fog C) anything that has to do with breathing, taking in oxygen and releasing carbon dioxide D) a colorless gas
A) impurities in the air, water and land that create an unclean environment B) something that is poisonous or deadly C) an element that pollutes D) visible emissions from a smoke stack or chimney
A) the layer of the Earth's atmosphere that is closest to the Earth B) the combination of all that exists around us which is necessary for us to survive C) the second layer of the Earth's atmosphere from the Earth's surface D) the whole mass of air surrounding the Earth
A) the layer of the Earth's atmosphere that is closest to the earth B) visible emissions from a smokestack or chimney C) ground level fog and smoke D) a colorless gas that is formed when pollutants react with sunlight and that is a major part of smog
A) impurities in the air, water and land that create an unclean environment B) the visible emissions from a smokestack or chimney C) a colorless gas that is formed when pollutants react with sunlight D) something that is poisonous or deadly
A) something that is poisonous and deadly B) ground level fog and smoke C) an element that pollutes D) a colorless gas that is formed when pollutants react with sunlight
A) the whole mass of air surrounding the Earth B) the second layer of the Earth's atmosphere from the Earth's surface C) the layer of the Earth's atmosphere that is the closest to the earth D) anything that has to do with breathing and taking in oxygen and releasing carbon dioxide
A) the second layer of the Earth's atmosphere from the Earth's surface B) the layer of Earth's atmosphere that is closest to the Earth C) the whole mass of air surrounding the Earth D) anything that has to do with breathing and taking in oxygen and releasing carbon dioxide
A) impurities in the air, water and land that create and unclean environment B) something that is poisonous or deadly if it is eaten, touched, or inhaled in large enough quantities C) an element that pollutes D) visible emissions from a smokestack or chimney
A) anything that has to do with breathing and taking in oxygen and releasing carbon dioxide B) ground level fog and smoke C) visible emissions from a smokestack or chimney D) combination of all that exists around us which is necessary for us to survive
A) visible emissions from a smokestack or chimney B) ground level fog and smoke C) anything that has to do with breathing and taking in oxygen and releasing carbon dioxide D) impurities in the air, water and land that create an unclean environment
A) something that is poisonous or deadly B) impurities in the air, water and land that create an unclean environment C) coal, oil, and natural gas formed from the remains of ancient plants and animal life D) ground level fog and smoke |