Which of the following would result in increase in "Global warming"?

• Increase in carbon dioxide in the atmosphere
• Burning of fossil fuels in the environment
• Increase in the number of various movements like "Chipko movement"

1 and 2

Chipko movement was initiated to save the trees from getting cut. Hence, would not result in increase in "Global warming". Burning of fossil fuels in the atmosphere results in increase in greenhouse gases in the environment i.e. carbon dioxide, methane etc.