N23 The graph shows the total carbon footprint of selected cities

Question 1

ai. Estimate the carbon footprint, in millions of tonnes of CO2, of New York. [1]

Answer 1

240 million

Question 2

aii. State the relationship between population and carbon footprint [1]

Answer 2

Positive relationship

Question 3

b. Outline one reason why small cities have very high carbon emissions [2]

Answer 3

Public transportation may be limited in small cities, leading to more private vehicle ownership.

Smaller cities tend to have less congestion, encouraging frequent and longer car trips, increasing emissions.

Question 4

c. Explain two eco city design strategies to reduce the urban ecological footprint. [3+3]

Answer 4

Developing an extensive public transport system reduces private vehicle usage and associated carbon emissions. This decreases the city’s ecological footprint by lowering greenhouse gas emissions from transportation

Expanding green spaces and urban forests throughout the city; this absorbs CO2, reducing the urban heat island effect, and improve air quality, thus ecological footprint of the city is reduced