UPSC Static Quiz – Environment : 24 December 2024

UPSC Static Quiz – Environment : 24 December 2024 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more.We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.

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• Question 1 of 5 1. Question What is the primary reason for the current shrinking of Roopkund Lake in Uttarakhand? a) Deforestation around the lake b) Over-extraction of water by local communities c) Construction of nearby dams d) Climate change, shifting precipitation patterns, and increased silting Correct Solution: d) Roopkund Lake, a high-altitude glacial lake in Uttarakhand, is shrinking primarily due to climate change, which is altering its natural dynamics: Climate change has shifted precipitation patterns, leading to reduced snowfall and increased rainfall. These changes impact the lake’s water balance, causing it to shrink over time. Increased silting from moraine slides, exacerbated by the warming climate, is further reducing the lake’s depth and surface area. The deposition of sediments into the lake affects its ability to retain water and contributes to its shrinking size. Incorrect Solution: d) Roopkund Lake, a high-altitude glacial lake in Uttarakhand, is shrinking primarily due to climate change, which is altering its natural dynamics: Climate change has shifted precipitation patterns, leading to reduced snowfall and increased rainfall. These changes impact the lake’s water balance, causing it to shrink over time. Increased silting from moraine slides, exacerbated by the warming climate, is further reducing the lake’s depth and surface area. The deposition of sediments into the lake affects its ability to retain water and contributes to its shrinking size.

#### 1. Question

What is the primary reason for the current shrinking of Roopkund Lake in Uttarakhand?

• a) Deforestation around the lake

• b) Over-extraction of water by local communities

• c) Construction of nearby dams

• d) Climate change, shifting precipitation patterns, and increased silting

Solution: d)

Roopkund Lake, a high-altitude glacial lake in Uttarakhand, is shrinking primarily due to climate change, which is altering its natural dynamics:

• Climate change has shifted precipitation patterns, leading to reduced snowfall and increased rainfall. These changes impact the lake’s water balance, causing it to shrink over time.

• Increased silting from moraine slides, exacerbated by the warming climate, is further reducing the lake’s depth and surface area. The deposition of sediments into the lake affects its ability to retain water and contributes to its shrinking size.

Solution: d)

Roopkund Lake, a high-altitude glacial lake in Uttarakhand, is shrinking primarily due to climate change, which is altering its natural dynamics:

• Climate change has shifted precipitation patterns, leading to reduced snowfall and increased rainfall. These changes impact the lake’s water balance, causing it to shrink over time.

• Question 2 of 5 2. Question Consider the following statements regarding the impact of polar ice melting on global climate systems: The melting of Arctic ice can disrupt thermohaline circulation, affecting global climate patterns. Melting permafrost releases methane, a potent greenhouse gas, which contributes to global warming. The melting of Antarctic ice has no significant impact on global sea levels due to its limited ice volume. How many of the above statements is/are correct? a) Only one b) Only two c) All three d) None Correct Solution: b) Statement 1 is correct because the influx of freshwater from melting Arctic ice can disrupt the thermohaline circulation, which drives global ocean currents and regulates climate patterns. Statement 2 is also correct, as the melting of permafrost releases methane, a powerful greenhouse gas that significantly contributes to global warming. Statement 3 is incorrect because the melting of Antarctic ice, especially from its vast ice sheets, has a profound impact on global sea levels, potentially leading to significant sea level rise. Incorrect Solution: b) Statement 1 is correct because the influx of freshwater from melting Arctic ice can disrupt the thermohaline circulation, which drives global ocean currents and regulates climate patterns. Statement 2 is also correct, as the melting of permafrost releases methane, a powerful greenhouse gas that significantly contributes to global warming. Statement 3 is incorrect because the melting of Antarctic ice, especially from its vast ice sheets, has a profound impact on global sea levels, potentially leading to significant sea level rise.

#### 2. Question

Consider the following statements regarding the impact of polar ice melting on global climate systems:

• The melting of Arctic ice can disrupt thermohaline circulation, affecting global climate patterns.

• Melting permafrost releases methane, a potent greenhouse gas, which contributes to global warming.

• The melting of Antarctic ice has no significant impact on global sea levels due to its limited ice volume.

How many of the above statements is/are correct?

• a) Only one

• b) Only two

• c) All three

Solution: b)

Statement 1 is correct because the influx of freshwater from melting Arctic ice can disrupt the thermohaline circulation, which drives global ocean currents and regulates climate patterns.

Statement 2 is also correct, as the melting of permafrost releases methane, a powerful greenhouse gas that significantly contributes to global warming.

Statement 3 is incorrect because the melting of Antarctic ice, especially from its vast ice sheets, has a profound impact on global sea levels, potentially leading to significant sea level rise.

Solution: b)

Statement 1 is correct because the influx of freshwater from melting Arctic ice can disrupt the thermohaline circulation, which drives global ocean currents and regulates climate patterns.

Statement 2 is also correct, as the melting of permafrost releases methane, a powerful greenhouse gas that significantly contributes to global warming.

Statement 3 is incorrect because the melting of Antarctic ice, especially from its vast ice sheets, has a profound impact on global sea levels, potentially leading to significant sea level rise.

• Question 3 of 5 3. Question Which phenomenon describes the movement of tropical marine species towards the poles due to rising sea temperatures? a) Ocean fertilization b) Tropicalisation c) Polar amplification d) Marine heatwaves Correct Solution: b) Tropicalisation is the term used to describe the mass movement of marine life where tropical marine species move from the equator towards the poles due to rising sea temperatures caused by climate change. This phenomenon is a direct consequence of global warming and its impact on ocean ecosystems. As waters warm, species adapted to tropical conditions extend their range towards higher latitudes, while temperate species retreat. This shift can have profound effects on marine ecosystems, altering food webs, species interactions, and potentially impacting fisheries and coastal economies. Tropicalisation is a clear indicator of the far-reaching consequences of climate change on marine biodiversity and highlights the need for comprehensive strategies to mitigate and adapt to these changes in our oceans. Incorrect Solution: b) Tropicalisation is the term used to describe the mass movement of marine life where tropical marine species move from the equator towards the poles due to rising sea temperatures caused by climate change. This phenomenon is a direct consequence of global warming and its impact on ocean ecosystems. As waters warm, species adapted to tropical conditions extend their range towards higher latitudes, while temperate species retreat. This shift can have profound effects on marine ecosystems, altering food webs, species interactions, and potentially impacting fisheries and coastal economies. Tropicalisation is a clear indicator of the far-reaching consequences of climate change on marine biodiversity and highlights the need for comprehensive strategies to mitigate and adapt to these changes in our oceans.

#### 3. Question

Which phenomenon describes the movement of tropical marine species towards the poles due to rising sea temperatures?

• a) Ocean fertilization

• b) Tropicalisation

• c) Polar amplification

• d) Marine heatwaves

• Solution: b)

• Tropicalisation is the term used to describe the mass movement of marine life where tropical marine species move from the equator towards the poles due to rising sea temperatures caused by climate change. This phenomenon is a direct consequence of global warming and its impact on ocean ecosystems.

• As waters warm, species adapted to tropical conditions extend their range towards higher latitudes, while temperate species retreat. This shift can have profound effects on marine ecosystems, altering food webs, species interactions, and potentially impacting fisheries and coastal economies.

Tropicalisation is a clear indicator of the far-reaching consequences of climate change on marine biodiversity and highlights the need for comprehensive strategies to mitigate and adapt to these changes in our oceans.

• Solution: b)

• Question 4 of 5 4. Question The ocean acidification will lead to which of the following? The growth and survival of calcareous phytoplankton will be adversely affected. The growth and survival of coral reefs will be adversely affected. It favours the formation of clouds and also the process of cloud seeding. How many of the above statements is/are incorrect? a) Only one b) Only two c) All three d) None Correct Solution: a) Statement 3 is incorrect. As carbon dioxide (CO2) dissolves in sea water, it forms carbonic acid, decreasing the ocean’s pH, a process collectively known as ocean acidification. Increased sea water acidity has been demonstrated to affect the formation and dissolution of calcium carbonate shells and skeletons in a range of marine species, including corals, molluscs such as oysters and mussels, and many phytoplankton and zooplankton species that form the base of marine food webs. Ocean Acidification would lead certain marine organisms to emit less of the sulphur compounds that help to seed the formation of clouds and so keep the planet cool. Incorrect Solution: a) Statement 3 is incorrect. As carbon dioxide (CO2) dissolves in sea water, it forms carbonic acid, decreasing the ocean’s pH, a process collectively known as ocean acidification. Increased sea water acidity has been demonstrated to affect the formation and dissolution of calcium carbonate shells and skeletons in a range of marine species, including corals, molluscs such as oysters and mussels, and many phytoplankton and zooplankton species that form the base of marine food webs. Ocean Acidification would lead certain marine organisms to emit less of the sulphur compounds that help to seed the formation of clouds and so keep the planet cool.

#### 4. Question

The ocean acidification will lead to which of the following?

• The growth and survival of calcareous phytoplankton will be adversely affected.

• The growth and survival of coral reefs will be adversely affected.

• It favours the formation of clouds and also the process of cloud seeding.

How many of the above statements is/are incorrect?

• a) Only one

• b) Only two

• c) All three

Solution: a)

Statement 3 is incorrect.

As carbon dioxide (CO2) dissolves in sea water, it forms carbonic acid, decreasing the ocean’s pH, a process collectively known as ocean acidification.

Increased sea water acidity has been demonstrated to affect the formation and dissolution of calcium carbonate shells and skeletons in a range of marine species, including corals, molluscs such as oysters and mussels, and many phytoplankton and zooplankton species that form the base of marine food webs.

Ocean Acidification would lead certain marine organisms to emit less of the sulphur compounds that help to seed the formation of clouds and so keep the planet cool.

Solution: a)

Statement 3 is incorrect.

As carbon dioxide (CO2) dissolves in sea water, it forms carbonic acid, decreasing the ocean’s pH, a process collectively known as ocean acidification.

Ocean Acidification would lead certain marine organisms to emit less of the sulphur compounds that help to seed the formation of clouds and so keep the planet cool.

• Question 5 of 5 5. Question Consider the following statements regarding Cyanobacteria. Cyanobacteria are microscopic organisms common in water and sometimes found in soil. Not all Cyanobacteria produce toxins. Climate change and increasing global temperature is leading to cyanobacterial blooms. Which of the above statements is/are correct? a) 1 and 2 only b) 1 and 3 only c) 1, 2 and 3 d) 2 and 3 only Correct Solution: c) Toxins in water produced by cyanobacteria killed more than 300 elephants in Botswana. Cyanobacteria are microscopic organisms common in water and sometimes found in soil. Not all produce toxins but scientists say toxic ones are occurring more frequently as climate change drives up global temperatures. Some cyanobacterial blooms can harm people and animals and scientists are concerned about their potential impact as climate change leads to warmer water temperatures, which many cyanobacteria prefer. Incorrect Solution: c) Toxins in water produced by cyanobacteria killed more than 300 elephants in Botswana. Cyanobacteria are microscopic organisms common in water and sometimes found in soil. Not all produce toxins but scientists say toxic ones are occurring more frequently as climate change drives up global temperatures. Some cyanobacterial blooms can harm people and animals and scientists are concerned about their potential impact as climate change leads to warmer water temperatures, which many cyanobacteria prefer.

#### 5. Question

Consider the following statements regarding Cyanobacteria.

• Cyanobacteria are microscopic organisms common in water and sometimes found in soil.

• Not all Cyanobacteria produce toxins.

• Climate change and increasing global temperature is leading to cyanobacterial blooms.

Which of the above statements is/are correct?

• a) 1 and 2 only

• b) 1 and 3 only

• c) 1, 2 and 3

• d) 2 and 3 only

Solution: c)

Toxins in water produced by cyanobacteria killed more than 300 elephants in Botswana.

Cyanobacteria are microscopic organisms common in water and sometimes found in soil. Not all produce toxins but scientists say toxic ones are occurring more frequently as climate change drives up global temperatures.

Some cyanobacterial blooms can harm people and animals and scientists are concerned about their potential impact as climate change leads to warmer water temperatures, which many cyanobacteria prefer.

Solution: c)

Toxins in water produced by cyanobacteria killed more than 300 elephants in Botswana.

Some cyanobacterial blooms can harm people and animals and scientists are concerned about their potential impact as climate change leads to warmer water temperatures, which many cyanobacteria prefer.

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