Pollution is the introduction of contaminants into the natural environment that cause adverse change pollution can take the form of chemical substances or.
(global environment monitoring system) ആവിഷ്ക്കരിച്ചിട്ടുണ്ട് തോത് (background air pollution monitoring network) ഓസോണിന്റെ അളവ്.
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Environmental pollution refers to the introduction of harmful pollutants into the environment the major types of environmental pollution are air.