Which of the following is an example of a greenhouse gas?

Methane (CH4) is indeed an example of a greenhouse gas due to its ability to absorb and emit infrared radiation, which contributes to the greenhouse effect and global warming. Greenhouse gases trap heat in the atmosphere, leading to a rise in temperature, which has significant implications for climate change.

Methane is particularly potent, having a much greater capacity to trap heat compared to carbon dioxide over a shorter time frame. Its role in agriculture, especially from animal digestion and rice production, as well as its release from landfills, makes it a critical target for climate change mitigation efforts.

In contrast, oxygen (O2) and nitrogen (N2) are not greenhouse gases because they do not significantly interact with infrared radiation. Argon (Ar) is an inert gas and also does not function as a greenhouse gas. Understanding the role of methane and its impact on climate change is essential for developing effective environmental policies and practices.