Question

2 possible reasons why the amount of carbon dioxide in the air can change. For 4th standard​

Answer 1

Answer:

On earth human activities are changing in natural greenhouse.Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). this happens because the coal or oil burning process combines carbon with oxygen In the air to make (CO2)

Answer 2

Answer:

On Earth, human activities are changing the natural greenhouse.

Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2).

This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.