pollution: the release of substances or energy into the environment, which results in deleterious effects: i.e., causing harm to living resources and life, being hazardous to human health, hindering human activities, or impairing the quality of the environmental resources.
(the release of substances or energy into the environment, which results in deleterious effects:; causing; harm)
the release of substances or energy into the environment, which results in deleterious effects:
causing
harm