Pollution levels refer to the concentration of harmful substances in the environment, which can affect air, water, and soil quality. These levels are often measured using various indicators, such as the presence of carbon dioxide, particulate matter, or heavy metals. High pollution levels can lead to health problems for humans and wildlife, as well as damage to ecosystems. Monitoring pollution levels is essential for public health and environmental protection. Governments and organizations use tools like air quality indices and water testing to assess pollution. By understanding these levels, communities can take action to reduce pollution and improve overall quality of life.