Consider the following diagram,and then answer the question below.

-What best explains the "bumps" seen in the seen in the CO₂ concentrations on the graph above?
A)greater amounts of CO₂ released by the burning of fossil fuels for heat during the winter
B)higher levels of traffic producing more CO₂ during the summer travel season
C)changes in plant growth that result in less CO₂ being absorbed during the dormant season
D)a cyclic pattern in the eruption of volcanoes,causing more CO₂ to be released each spring

Question

Consider the following diagram,and then answer the question below.
 
-What best explains the "bumps" seen in the seen in the CO₂ concentrations on the graph above?
A)greater amounts of CO₂ released by the burning of fossil fuels for heat during the winter 
B)higher levels of traffic producing more CO₂ during the summer travel season 
C)changes in plant growth that result in less CO₂ being absorbed during the dormant season 
D)a cyclic pattern in the eruption of volcanoes,causing more CO₂ to be released each spring

Quizplus · Accepted Answer

The "bumps" in CO₂ concentrations are due to seasonal changes in plant growth, with less CO₂ being absorbed during the dormant season (fall and winter) and more being absorbed during the growing season (spring and summer).

Consider the Following Diagram,and Then Answer the Question Below