How Human Activities Change Materials and Harm the EnvironmentPollution – When materials change into harmful substances (e.g., plastic breaking down into microplastics, metal rusting and contaminating soil), they can pollute air, water, and land.Toxic Waste – Some chemical changes produce dangerous byproducts, which can poison plants, animals, and humans.Habitat Damage – Changes like corrosion, burning, or chemical spills can destroy ecosystems and reduce biodiversity.Climate Impact – Processes such as burning fossil fuels release greenhouse gases, contributing to global warming.Waste Accumulation – Materials that degrade slowly (like plastics) stay in the environment for decades, harming wildlife and disrupting natural cycles.