Question

4. A group of gases that maintains temperature of atmosphere is:
b. nitrogen and carbon dioxide
. carbon dioxide and water vapours
d. nitrogen and oxygen
c. oxygen and water vapours

Answer 1

There are several different types of greenhouse gases. The major ones are carbon dioxide, water vapor, methane, and nitrous oxide. These gas molecules all are made of three or more atoms.

Answer 2

Complete question:-

4. A group of gases that maintains temperature of atmosphere is:

A) nitrogen and carbon dioxide

B) carbon dioxide and water vapours

C) nitrogen and oxygen

D) oxygen and water vapours

                                                                                                                           

Answer:

A group of gases that maintains temperature of atmosphere is- B) carbon dioxide and water vapours.

Explanation:

• The Earth's atmosphere naturally contains carbon dioxide, methane, water vapor, and nitrous oxide. Therefore, these gases maintain the atmospheric temperature gradient.

Water vapours

• The most abundant greenhouse gas in the Earth's atmosphere is water vapor. Changes in the concentration of water vapor in our atmosphere are attributed to climate feedbacks related to climate warming rather than to industrialization. Although the water cycle is well understood, feedback loops connecting the water cycle and climate change remain largely unknown.

Carbon dioxide

• Carbon dioxide is possibly the most extensively researched greenhouse gas.
• In 1958, Dr. Charles Keeling, an American scientist, began measuring atmospheric carbon dioxide at the Mauna Loa Observatory. His research was the first to warn the world about the anthropogenic (caused by humans) contributions to global warming.
• His extensive research resulted in the famous "Keeling Curve," which measured the ongoing buildup of carbon dioxide in the Earth's atmosphere.
• Carbon dioxide levels showed a strong seasonal variation in Keeling's data as well. Peak levels occur in the Northern Hemisphere in late winter.
• The lowest levels are in the spring and early summer. It's worth noting that the variations can be explained by considering what's going on with plant growth at the time.
• Plant growth reduces atmospheric CO2 through photosynthesis in the spring and early summer; during the winter, plants cannot have the same mediating effects, and atmospheric CO2 rises.

Explanation for incorrect options:

A) nitrogen and carbon dioxide is Incorrect option as Nitrogen is not natually present in out atmosphere.

C) nitrogen and oxygen is Incorrect option as Nitrogen and Oxygen both are not natually present in out atmosphere.

D) oxygen and water vapours is Incorrect option as Oxygen is not natually present in out atmosphere.

                                           

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