Answer:
carbon dioxide in the atmosphere
Step-by-step explanation:
Carbon dioxide in the atmosphere is the major cause of greenhouse effect.
Greenhouse effect is the main cause of global warming.
- This effect is produced as a result of some certain gases called greenhouse gases.
- These gases are carbon dioxide, water vapor, methane etc.
- They prevent short wave radiations from leaving the earth.
- This causes the increase in temperature of the surface.