Question

List any three human activities which would lead to an increase in the carbon dioxide content of air
NCERT Class IX
Sciences - Main Coursle Book
Chapter 14. Natural Resources

Answer 1

using vechicles, industrial releasing harmful gases, burning of fossil fuels

Answer 2

1. Burning of fuels in various processes like heating cooking transportation and industry.
2. Human induced forest fires.
3.The process of deforestation includes the cutting down of trees.this decreases the update of carbon dioxide for photosynthesis eventually the contact of carbon dioxide increases.