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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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naturelle naturelle
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7 years ago
Which is true of the level of CO2 in our atmosphere? 
A)  They are currently over 386 ppm. 
B)  The rate of increase leveled out in 1976. 
C)  The  level of CO2 was much higher in 1955 than today. 
D)  The level of CO2  is decreasing at 3.1% per year.
Textbook 
Geosystems: An Introduction to Physical Geography

Geosystems: An Introduction to Physical Geography


Edition: 7th
Author:
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kivlihankivlihan
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7 years ago
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naturelle Author
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#2
6 years ago
You're my superhero lol

Thank you
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