Greenhouse Effect on Earth:
The greenhouse effect is a natural phenomenon that occurs when certain gases in the Earth's atmosphere trap heat from the sun and prevent it from escaping into space. This process keeps the Earth's temperature within a range that is suitable for life.

Contribution of Gases:
There are several gases that contribute to the greenhouse effect on Earth, including carbon dioxide, methane, chlorofluorocarbon, and freon. However, among all these gases, carbon dioxide contributes the most to the greenhouse effect.

Reason for Carbon Dioxide:
Carbon dioxide is the most significant greenhouse gas because it is produced in large quantities by human activities such as burning fossil fuels, deforestation, and industrial processes. These activities have caused a significant increase in the concentration of carbon dioxide in the atmosphere, which has led to an increase in global temperatures.

Impact of Carbon Dioxide:
The impact of carbon dioxide on the greenhouse effect is significant because it has a long atmospheric lifetime, meaning that it remains in the atmosphere for a long time. This means that even if we were to reduce our carbon dioxide emissions today, the effects of past emissions would continue to impact the climate for decades to come.

Conclusion:
In conclusion, carbon dioxide contributes the most to the greenhouse effect on Earth due to its large-scale production by human activities and its long atmospheric lifetime. Therefore, reducing carbon dioxide emissions is crucial in mitigating the effects of climate change.

Carbons dioxide plays a crucial role in green house effect.
Earth have carbon dioxide in high amount except other gases.