Today, concentration of green house gases is high because of:
Correct answer: A. All the above
- A. All the above
- B. Increased combustion of oil and coal
- C. Deforestation
- D. Use of refrigerator
Explanation
Refrigerants can release CFCs, fossil-fuel combustion adds CO2, and deforestation both releases stored carbon and reduces its removal by forests. Therefore, all three activities increase greenhouse-gas concentrations.
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