Which of the following is part of a positive feedback mechanism associated with global climate change?
A: increase in the gas mileage of cars
B: increase in the cloudiness caused by more moisture in the atmosphere
C: melting of Arctic sea ice
D: increase in the acidity of seawater
E: increase in the growth of CO2 absorbing trees and grasses
A: increase in the gas mileage of cars
B: increase in the cloudiness caused by more moisture in the atmosphere
C: melting of Arctic sea ice
D: increase in the acidity of seawater
E: increase in the growth of CO2 absorbing trees and grasses
举一反三
- Global climate change mainly refers to global warming caused by the increase of ( ). A: Harmful gases B: Noble gases C: greenhouse gases D: Air pollutants
- 1. The manifestation of global warming contains glacier melting, sea level rising and increase .(humidity / temperature)
- Which of the following will increase cardiac output? A: an increase in sympathetic impulses B: an increase in parasympathetic impulses C: a faster stream of impulses from the baroreceptors D: an increase in vasodilation
- Which of the following will result in an increase in productivity A: 10% decrease in both output and input B: 10% increase in output and 5% increase in input C: 5% increase in output and 10% increase in input D: 10% increase in both output and input
- Which of the following would increase the price level? A: an increase in taxes. B: an increase in the money supply. C: an increase in the expected price level. D: a decrease in the natural rate of unemployment.