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oiratno oiratno
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Variable atmospheric components refer to 
A)  only natural gases and materials. 
B)  nitrogen, oxygen, argon, and carbon dioxide. 
C)  natural sources of dust and aerosols, such as volcanic dust and forest fire smoke, but nothing anthropogenic (human-caused). 
D)  both natural and anthropogenic gases and materials.
Textbook 
Geosystems: An Introduction to Physical Geography

Geosystems: An Introduction to Physical Geography


Edition: 7th
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Geosystems: An Introduction to Physical Geography, 7th Edition (Christopherson)
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twentytootwentytoo
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oiratno Author
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6 years ago
Thank you so much for helping me out today
Geosystems: An Introduction to Physical Geography, 7th Edition (Christopherson)
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