Which of the following effects is likely to occur due to the rise in temperature caused by global warming? 1. Melting of snow in the coldest parts of the world. 2. It leads to a decrease in sea levels. 3. Extinction of some plants and animals in the long run. Select the correct answer using the code given below:

The correct option is (c). Explanation Global warming refers to the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere. - Statement 1 is Correct: The rise in global average temperatures leads to the melting of the cryosphere, which includes snow, glaciers, and ice sheets in the coldest regions of the world, such as the Arctic, Antarctica, and high-altitude mountain ranges. - Statement 2 is Incorrect: Global warming leads to a rise in sea levels, not a decrease. This rise is primarily driven by two factors related to global warming: the added water from melting land-based ice sheets and glaciers, and the expansion of seawater as it warms (thermal expansion). - Statement 3 is Correct: Climate change alters habitats and ecosystems at a pace that exceeds the ability of many species to adapt or migrate. This stress, combined with other anthropogenic pressures, significantly increases the risk of extinction for numerous plant and animal species in the long run. Key Takeaway: Global warming results in the melting of polar ice and thermal expansion of oceans, causing sea-level rise, and poses a severe threat to biodiversity by disrupting established ecological niches.

NCERT Class 7 Geography — Chapter 1: Air

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Which of the following effects is likely to occur due to the rise in temperature caused by global warming?

Melting of snow in the coldest parts of the world.
It leads to a decrease in sea levels.
Extinction of some plants and animals in the long run.

Select the correct answer using the code given below:

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

Global warming refers to the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

Statement 1 is Correct: The rise in global average temperatures leads to the melting of the cryosphere, which includes snow, glaciers, and ice sheets in the coldest regions of the world, such as the Arctic, Antarctica, and high-altitude mountain ranges.
Statement 2 is Incorrect: Global warming leads to a rise in sea levels, not a decrease. This rise is primarily driven by two factors related to global warming: the added water from melting land-based ice sheets and glaciers, and the expansion of seawater as it warms (thermal expansion).
Statement 3 is Correct: Climate change alters habitats and ecosystems at a pace that exceeds the ability of many species to adapt or migrate. This stress, combined with other anthropogenic pressures, significantly increases the risk of extinction for numerous plant and animal species in the long run.

Key Takeaway: Global warming results in the melting of polar ice and thermal expansion of oceans, causing sea-level rise, and poses a severe threat to biodiversity by disrupting established ecological niches.

Your note

More from Chapter 1: Air

With reference to the composition of the atmosphere, consider the following statements: 1. Nitrogen is the most plentiful gas in the air. 2. Carbon dioxide and argon together make up the bulk of the atmosphere. 3. Helium and hydrogen are present in the atmosphere in lesser quantities than nitrogen. Which of the statements given above is/are correct?

easy

Which of the following gases is primarily responsible for the "greenhouse effect" by trapping the heat radiated from the earth?

easy

Consider the following statements regarding the circulation of air: 1. When air is heated, it contracts and becomes heavier. 2. Cold air is denser and tends to sink down. 3. Air circulation occurs when cold air from surrounding areas rushes to fill the gap left by rising hot air. Which of the statements given above is/are correct?

medium

With reference to the nitrogen cycle in the atmosphere, consider the following statements: 1. Plants absorb nitrogen directly from the air through their leaves. 2. Bacteria living in the soil and roots of some plants change the form of nitrogen for plant use. 3. Humans absorb all the nitrogen they inhale during breathing. Which of the statements given above is/are correct?

medium

Which one of the following best explains why the balance of carbon dioxide in the atmosphere is getting disturbed?

easy

Keep practising Chapter 1: Air

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The correct option is (c).

Explanation

Statement 1 is Correct: The rise in global average temperatures leads to the melting of the cryosphere, which includes snow, glaciers, and ice sheets in the coldest regions of the world, such as the Arctic, Antarctica, and high-altitude mountain ranges.
Statement 2 is Incorrect: Global warming leads to a rise in sea levels, not a decrease. This rise is primarily driven by two factors related to global warming: the added water from melting land-based ice sheets and glaciers, and the expansion of seawater as it warms (thermal expansion).
Statement 3 is Correct: Climate change alters habitats and ecosystems at a pace that exceeds the ability of many species to adapt or migrate. This stress, combined with other anthropogenic pressures, significantly increases the risk of extinction for numerous plant and animal species in the long run.