These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.
ANSWER:Pollution is the introduction of harmful substances or contaminants into the environment, causing adverse effects on air, water, and land. IT OCCURS FROM:Human activities like industrial processes, vehicle emissions, and improper waste disposal. NEGATIVE EFFECTSPollution negatively impacts human health, wildlife, and ecosystems, leading to problems such as respiratory issues, water contamination, and climate change. POSITIVE WAYS TO LESSEN POLLUTION:Reducing pollution involves using cleaner energy sources, recycling, and regulating waste and emissions.#