Lesson 18 - Atmospheric Composition: Question Preview (ID: 29189)


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Which may be partly responsible for increased amount of carbon dioxide in Earth's atmosphere?
a) the burning of fossil fuels
b) increase in organisms that use photosynthesis to make their own food
c) rising temperatures
d) increased farming

Which is a Trace Gas in Earth's Atmosphere
a) Nitrogen
b) Water Vapor
c) Oxygen
d) Potassium

What percent of the Atmosphere is Argon and other gases?
a) 1-2%
b) 78-79%
c) 20-21%
d) 49-50%

What percent of the Atmosphere is Oxygen?
a) 79-79%
b) 49-50%
c) 20-21%
d) Less than 2%

What percent of the Atmosphere is Nitrogen?
a) 89-90%
b) 80-81%
c) 78-79%
d) 49-50%

Which is the 3rd largest percent in the mixture of Earth's Atmosphere?
a) Argon
b) Nitrogen
c) Water Vapor
d) Hydrogen

What is the Product of Photosynthesis?
a) Carbon Dioxide
b) Oxygen
c) Nitrogen
d) Hydrogen

What gas do plants change into Oxygen?
a) Nitrogen
b) Carbon Dioxide
c) Hydrogen
d) Argon

Which is the largest percent in the mixture of Earth's Atmosphere?
a) Nitrogen
b) Hydrogen
c) Oxygen
d) Argon

Which is the 2nd largest percent in the mixture of Earth's Atmosphere?
a) Oxygen
b) Nitrogen
c) Argon
d) Hydrogen

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