How did pollution of environment start?

What is environmental pollution? Can pollution of the environment occur without human iintervention? Explain.

Answer the following : Describe the effects of air pollution on the environment.

What is environemntal pollution ? Can pollution of the environment occur without Human inrtrvension.

Evaluate the effects of following pollutants on environment and human health: Pollen grain

Evaluate the effects of following pollutants on environment and human health: Non-biodegradable insecticides

Evaluate the effects of following pollutants on environment and human health: Chlorofluorocarbon