Humans currently pump about 9.1 billion tons of CO2 into the atmosphere each year. Of this, about 5.0 billion tons are absorbed by plants, soils, and the oceans. Most of the remaining 4.1 billion tons goes into ________.
A) outer space
B) the polar ice caps
C) the atmosphere
D) sedimentary rocks
Question 2
Carbon can assume both +4 and -4 charges.
Indicate whether the statement is true or false
Question 3
H+ has one electron.
Indicate whether the statement is true or false
Question 4
Why are seasonal fluctuations in atmospheric much more pronounced in the northern hemisphere compared to the southern hemisphere?
A) The trees and other photosynthetic plants absorb atmospheric carbon dioxide in summer in the northern hemisphere but lose their leaves in fall and winter, and photosynthesis stops.
B) During the fall and winter in the northern hemisphere decay of the organic matter generates carbon dioxide, which increases the atmospheric levels by the spring.
C) Both A and B are true.
D) production is more limited in the area of our planet's largest land masses, which are located in the southern hemisphere.
Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th
Temperature Profile of Earth’s Atmosphere
Sources of SO2 Pollution in the Atmosphere
Composition of the Atmosphere
Kahan (Last Year)