How is the air cleaned in natural envirment?

In natural environments, air is cleaned through several processes, primarily photosynthesis and the action of plants, trees, and microorganisms. During photosynthesis, plants absorb carbon dioxide and release oxygen, improving air quality. Additionally, natural processes such as precipitation can wash away pollutants, while atmospheric reactions break down harmful compounds. The presence of healthy ecosystems, including forests and wetlands, also plays a crucial role in filtering and purifying the air.