Q:

The following statements are made regarding global warming.
 A. Global warming is the long-term heating of Earth's surface observed since the pre-industrial period due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.
 B. Global warming causes climate change, which poses a serious threat to life on Earth in the forms of widespread flooding and extreme weather. Which of these statements are correct?

• 1
  Only B
• 2
  Only A
• 3
  Both A & B
• 4
  Both A & B are incorrect