If we were to lower our rate of CO2 production by a third—down from 9 to 6 billion tons per year—the concentration of CO2 in the atmosphere should
A) start to decrease.
B) reach a steady state.
C) continue to increase.
D) It depends upon whether there are any major volcanic eruptions.
C
You might also like to view...
In the United States the air quality is poorer and drinking water more polluted today than in the 1970s.
Answer the following statement true (T) or false (F)
Based on the history of the world-system, once a country is in the periphery, it always remains in the periphery
Indicate whether this statement is true or false.
Carbon dioxide levels in the atmosphere are rising due to the burning of fossil fuels. How might this increased level of carbon dioxide affect rates of weathering?
Which of the following pairs lists an r-selected organism followed by a K-selected organism?
A) elephant; whale B) pine tree; dandelion C) dandelion; pine tree D) grasshopper; whale E) elephant; pine tree