“An unwanted change in the environment is termed:”

"Pollution refers to undesirable environmental changes caused by harmful substances or activities. It includes air water and soil contamination from industrial emissions or chemicals impacting ecosystems and health. Pollution disrupts natural processes leading to climate change and biodiversity loss. Effective management requires sustainable practices and policy interventions. Understanding pollution’s effects is crucial for developing strategies to mitigate environmental degradation and promote ecological balance ensuring a healthier planet for future generations."