The Greenhouse Effect is intensified by increases in all the following gases except?

The Greenhouse Effect refers to the process by which certain gases in the Earth's atmosphere trap heat, contributing to global warming. The gases that most commonly contribute to this effect include carbon dioxide, methane, and nitrous oxide. These gases are known as greenhouse gases because they have the ability to absorb and emit infrared radiation, thus helping to keep the Earth's surface warm.

Oxygen, in contrast, does not have the same heat-trapping capabilities as the aforementioned gases. While oxygen is essential for life and participates in various chemical reactions, it does not contribute to the greenhouse effect because it does not absorb significant amounts of infrared radiation. The presence of increased levels of oxygen would not enhance the greenhouse effect.

In summary, while methane, nitrous oxide, and carbon dioxide are significant contributors to the greenhouse effect due to their ability to trap heat, oxygen does not play a role in this process, making it the correct choice in this context.