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Primary pollutants are directly emitted from the sources. Examples of primary pollutants are carbon monoxide, carbon dioxide, sulphur dioxide and benzene etc. Secondary pollutants are not emitted directly. They are formed from the combination of primary pollutants with some other compound. Examples of secondary pollutants are Ozone, Formaldehyde, PAN (peroxyContinue Reading

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World’s five hotspots of biodiversity Here are five of the world’s highest biodiversity ecologies still over 70 percent intact, as identified by the Conservation International. Hotspots require two main criteria: At least 1,500 vascular plant species with over half endemic to the region, or found only there. Amazon Rain Forest: The AmazonContinue Reading