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Question (41)

QN0038061

Why is sustainability considered an important aspect of development?

(A) Resources are unlimited
(B) Present development should not destroy the ability of future generations to meet their needs
(C) Only present consumption matters
(D) Natural resources have no economic value

Correct Answer: B

Explanation:

Sustainable development requires maintaining development without exhausting resources needed by future generations.

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Question (42)

QN0038062

Groundwater is considered a renewable resource because:

(A) It can never be exhausted
(B) It is replenished naturally
(C) It is available only once
(D) It is produced in factories

Correct Answer: B

Explanation:

Groundwater is naturally replenished, although it can be overused when extraction exceeds replenishment.

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Question (43)

QN0038063

A region receives 100 units of groundwater recharge annually but extracts 140 units. What is the annual excess extraction?

(A) 20 units
(B) 30 units
(C) 40 units
(D) 240 units

Correct Answer: C

Explanation:

Excess extraction = 140 − 100 = 40 units.

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Question (44)

QN0038064

If a groundwater reserve is replenished by 80 million litres annually but 100 million litres are extracted, what happens over time?

(A) The groundwater level must necessarily increase
(B) The resource is being overused
(C) Extraction is exactly sustainable
(D) The reserve becomes non-renewable immediately

Correct Answer: B

Explanation:

Extraction exceeds natural replenishment by 20 million litres annually, so the groundwater is being overused.

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Question (45)

QN0038065

Which of the following is a non-renewable resource discussed in the chapter?

(A) Groundwater
(B) Crops
(C) Crude oil
(D) Plants

Correct Answer: C

Explanation:

Crude oil is a non-renewable resource because its stock is fixed and cannot be naturally replenished within a short period.

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Question (46)

QN0038066

According to the crude oil table, the world's estimated reserves in 2017 were:

(A) 836 thousand million barrels
(B) 69 thousand million barrels
(C) 1,732 thousand million barrels
(D) 173 thousand million barrels

Correct Answer: C

Explanation:

The table gives world crude oil reserves as 1,732 thousand million barrels in 2017.

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Question (47)

QN0038067

According to the chapter's crude oil table, if extraction continues at the present rate, world reserves were estimated to last approximately:

(A) 10.5 years
(B) 25 years
(C) 47 years
(D) 70 years

Correct Answer: C

Explanation:

The table estimates that world crude oil reserves would last about 47 years at the stated rate of extraction.

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Question (48)

QN0038068

The Middle East has 836 thousand million barrels of crude oil reserves and an estimated duration of 70 years. The USA has 69 thousand million barrels and an estimated duration of 10.5 years. Which conclusion follows from the data?

(A) The USA has more reserves than the Middle East
(B) The Middle East has more estimated reserves and a longer duration
(C) Both regions have identical reserves
(D) Reserve size has no relation to estimated duration

Correct Answer: B

Explanation:

The Middle East has 836 thousand million barrels and an estimated duration of 70 years, compared with 69 thousand million barrels and 10.5 years for the USA.

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Question (49)

QN0038069

Suppose a country uses a non-renewable resource at a constant rate and its known reserve is expected to last 20 years. If the country doubles its rate of extraction, approximately how long would the same reserve last, assuming no new reserves are discovered?

(A) 5 years
(B) 10 years
(C) 20 years
(D) 40 years

Correct Answer: B

Explanation:

If the extraction rate doubles while the total reserve remains unchanged, the estimated duration is approximately halved from 20 years to 10 years.

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Question (50)

QN0038070

A country records the following changes over ten years: per capita income increased substantially, literacy increased, infant mortality decreased, and groundwater extraction remained consistently higher than recharge. Which statement best evaluates the development pattern?

(A) Development has occurred in every respect and is completely sustainable
(B) There has been improvement in several human-development indicators, but the pattern raises sustainability concerns
(C) There has been no development because groundwater is overused
(D) Income growth automatically makes resource use sustainable

Correct Answer: B

Explanation:

Income, education and health indicators have improved, but extracting groundwater faster than its natural recharge creates a sustainability concern.

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Question (41)

Why is sustainability considered an important aspect of development?

Explanation:

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Question (42)

Groundwater is considered a renewable resource because:

Explanation:

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Question (43)

A region receives 100 units of groundwater recharge annually but extracts 140 units. What is the annual excess extraction?

Explanation:

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Question (44)

If a groundwater reserve is replenished by 80 million litres annually but 100 million litres are extracted, what happens over time?

Explanation:

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Question (45)

Which of the following is a non-renewable resource discussed in the chapter?

Explanation:

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Question (46)

According to the crude oil table, the world's estimated reserves in 2017 were:

Explanation:

Link:

Question (47)

According to the chapter's crude oil table, if extraction continues at the present rate, world reserves were estimated to last approximately:

Explanation:

Link:

Question (48)

The Middle East has 836 thousand million barrels of crude oil reserves and an estimated duration of 70 years. The USA has 69 thousand million barrels and an estimated duration of 10.5 years. Which conclusion follows from the data?

Explanation:

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Question (49)

Suppose a country uses a non-renewable resource at a constant rate and its known reserve is expected to last 20 years. If the country doubles its rate of extraction, approximately how long would the same reserve last, assuming no new reserves are discovered?

Explanation:

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Question (50)

A country records the following changes over ten years: per capita income increased substantially, literacy increased, infant mortality decreased, and groundwater extraction remained consistently higher than recharge. Which statement best evaluates the development pattern?

Explanation:

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