What is pollution defined as?

Pollution is specifically defined as the presence of harmful substances that cause adverse effects on the environment and living organisms. This definition encompasses a variety of pollutants, including chemicals, noise, and waste materials that can degrade air, water, and soil quality. The key aspect of pollution is that these substances are detrimental to health and ecological balance, distinguishing it from merely a lack of chemicals or any positive change, such as an increase in natural resources or a decrease in urban waste. Understanding pollution in this manner highlights the need for regulations and practices to control harmful emissions, ensuring a healthier environment for all.