Saran's Learn Microbiology

  GREENHOUSE EFFECT ·        Greenhouse Effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by Greenhouse gases. ·        The Green house effect is the chief cause of climate change which in turn is the primary factor responsible for climate change. GREENHOUSE GASES ·        Greenhouse gases are gases that trap heat in Earth’s atmosphere. ·        Greenhouse gases can be naturally occurring or human-produced. Major Greenhouse Gases 1)     Carbon-di-oxide 2)     Methane 3)     Ozone   4)     Water vapour Other Greenhouse Gases 1)     Nitrous oxide 2)     Hydrofluorocarbons 3)     Perflurocarbo...

  AIR POLLUTION  POLLUTION ·        Introduction of harmful materials into the environment is called Pollution. ·        The agents responsible for causing Pollution are called as Pollutants. AIR POLLUTION ·        Air pollution occurs when harmful substances including Particulate molecules, Gaseous molecules and Biological molecules are introduced into Earth's atmosphere. ü   Particulate molecules – Suspended particulate matter (SPM), Dust particles, Smoke, Mist, Fumes, Spray, Benzopyrenes, Asbestos, Pesticides and Metallic dusts. ü   Gaseous molecules – Inorganic gases (NO, NO 2 , SO 2 , CO, CO 2 , O 3 , NH 3 , Cl & H 2 S) and Organic gases (Methane, Acetylene, Ethylene, Ethyl radicals, Aldehydes & Alcohols) ü   Biological molecules – Microorganisms, Spores and Pollens ·        Air pollution may cause diseases, a...