Question

Which of the following are correct for the greenhouse effect? (i) CO2 is mainly responsible for the greenhouse effect. (ii) The gradual increase in the average temperature of the earth’s atmosphere is called global warming. (iii) Methane, nitrous oxide and water vapour are greenhouse gases like CO2. (iv) An increase in earth’s temperature by as little as 0.5 0C has no effect.​

Answer 1

Greenhouse effect

Explanation:

• Greenhouse effect is a warming of Earth's surface. It is a natural process by which sun's radiation traps by the planet's atmosphere which eventually warms the Earth's surface.
• Greenhouses gases are the gases which have tendency to trap the heat coming from sun and radiate infrared radiation in the wavelength range.
• The greenhouse gases which are present in Earth's atmosphere are water vapor(H₂O), carbon dioxide(CO₂), nitrous oxide(N₂O), methane(CH₄) etc.
• Due to this greenhouse effect, average temperature of Earth's atmosphere is increasing gradually which is known as Global warming.
• Increasing temperature just by 0.5⁰C has a major effect on Earth's atmosphere.

Answer 2

Greenhouse effect

Explanation:

• Greenhouse effect -That process in which gases trap het from the earth's surface

• Gases which cause greenhouse effects is  ozone , methane and water vapour.

• Carbon dioxide- the main gas which is responsible for it

• So i, ii, iii option are correct but iv is not correct

• Increase in gases due to anthropogenic action cause global warming

• Due to global warming earth experiences more warmer environment.

• The main human activity which cause more increase in the amount of gases is deforestation