Environmental Science The earth's first atmosphere was composed primarily of: Oxygen and water vapor Argon and nitrogen Carbon dioxide and water vapor Hydrogen and helium Oxygen and water vapor Argon and nitrogen Carbon dioxide and water vapor Hydrogen and helium ANSWER DOWNLOAD EXAMIANS APP
Environmental Science Ozone Umbrella is located in which layer of atmosphere Stratosphere Troposphere Mesosphere Ionosphere Stratosphere Troposphere Mesosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Science Which of the following group of gases cause photochemical smog? HC, NO and PAN O2, PAN, and NO2 Ozone, PAN and CO O3, PAN and NO2 HC, NO and PAN O2, PAN, and NO2 Ozone, PAN and CO O3, PAN and NO2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Science Approximately, 50% of total world species are present on Tropical rain forest Temperate deciduous forest Coral reefs Temperate rain forest Tropical rain forest Temperate deciduous forest Coral reefs Temperate rain forest ANSWER DOWNLOAD EXAMIANS APP
Environmental Science When the two ecosystems overlap each other, the area is called Ecotone Niche Ecotype Habitat Ecotone Niche Ecotype Habitat ANSWER DOWNLOAD EXAMIANS APP
Environmental Science The first oil well was drilled in the United States in 1929 1959 1829 1859 1929 1959 1829 1859 ANSWER DOWNLOAD EXAMIANS APP
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