railway RRB JE (CBT I + CBT II) Mock Test 2024 People Development & Environment Environmental Issues Climate Change & Global Warming
Which of the following factors contribute to climate change:
1. Changes in sunspots
2. Melting of glaciers
3. Increased use of fossil fuel
4. Volcanic eruption
1
1, 3 and 4
2
1, 2 and 3
3
2, 3 and 4
4
All of the above