Which of the following has caused global warming?
A. Burning of biomass
B. Burning of fossil fuels
C. Releasing CFCs into the atmosphere
D. Melting metals
Answer:B
Which of the following has caused global warming?
A. Burning of biomass B. Burning of fossil fuels C. Releasing CFCs into the atmosphere D. Melting metals
Explanation: Burning fossil fuels for various industrial and domestic processes since the past 100-150 years has led to global warming. Releasing CFCs into the atmosphere damages the ozone layer.