NEET2013BotanyEnvironmental IssuesActual
Climate of the world is threatened by:
Options
- Adecreasing amount of atmospheric oxygen.
- Bincreasing amount of atmospheric carbon dioxide.
- Cdecreasing amount of atmospheric carbon dioxide.
- Dincreasing concentration of atmospheric oxygen.
Correct answer
B. increasing amount of atmospheric carbon dioxide.
Step-by-step solution
Carbon dioxide is the major greenhouse gas. It is capable of absorbing infrared radiation, trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming. Greenhouse gases include carbon dioxide, water vapour, methane, ozone, nitrous oxide and fluorinated gases they absorb heat and trap heat within the surface-troposphere system. Related Theory The various consequences of Global warming are: