Classification of Pollutants | Primary Pollutants vs Secondary Pollutants | Environmental Chemistry
Pollutants: Any substance produced either by a natural source or by human acti…
Pollutants: Any substance produced either by a natural source or by human acti…
i) A ssertive sentence or declarative sentence: A sentence that makes a staem…
What are Alloys? Alloys are mixtures of two or more metals or a metal and a n…
What is colloid? A homogeneous non-crystalline substance consisting of large …
Type of Waste 1. Toxic waste causes serious problem to our health and to the …
