Explain the differences between pure air and polluted air.

Pure airPolluted air1. Pure air contains around 78% nitrogen, 21% oxygen, and 1% other gases such as argon, carbon dioxide, and neon. Polluted air contains harmful substances mixed with these gases. These substances can be solid particles, liquid droplets, or gases.2. Pure air is odorless, colorless, and tasteless. Polluted air may have a noticeable odor, color, or taste depending on the pollutants present.3. Pure air is breathable and does not cause any health problems when inhaled. Polluted air can cause respiratory problems, cardiovascular problems, and other health issues depending on the type and concentration of pollutants.4. Pure air does not contribute to climate change or acid rain. Polluted air contributes significantly to both, mainly through greenhouse gases (like carbon dioxide and methane) and sulfur oxides and nitrogen oxides.5. Pure air is essential for the survival of living beings. Polluted air can harm plants, animals, and humans, affecting ecosystems and biodiversity. Examples of pollutants include particulate matter (PM2.5 and PM10), ozone (O3), sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), and volatile organic compounds (VOCs).