Question

 Air pollution refers to any physical, chemical or biological change in the air. It is the contamination of air by harmful gases, dust and smoke affects plants, animals and humans drastically.

              There is a certain percentage of gases present in the atmosphere. An increase or decrease in the composition of these gases is harmful to survival. This imbalance in the gaseous composition has resulted in an increase in earth’s temperature, which is known as global warming.

Identify the greenhouse gases from the following

          i) Methane

          ii) Carbon dioxide

          iii) Nitrogen



a.

i and ii

b.

ii and iii

c.

Only i

d.

i, ii and iii

no​

Answer 1

Answer:

Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3). Other greenhouse gases have essentially no natural sources, but are side products of industrial processes or manufactured for human purposes such as cleaning agents, refrigerants, and electrical insulators. These include the fluorinated gases: chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HCFCs), bromofluorocarbons (halons), perfluorcarbons, PFCs, nitrogen trifluoride, NF3, and sulfur hexafluoride, SF6.

Answer 2

Answer:

$\huge\orange{a.i \: and \: ii}$

Explanation:

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