Question $2$ : Une envolée de Sudbury à Toronto aller-retour dégage $317 \mathrm{~kg}$ de $\mathrm{CO}_{2}$ par passager. Estce que le voyage en avion a une petite ou une grande empreinte écologiqúe ? Justifie ta réponse.

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Q. Question

2

: Une envolée de Sudbury à Toronto aller-retour dégage

317 \mathrm{~kg}

\mathrm{CO}_{2}

par passager. Estce que le voyage en avion a une petite ou une grande empreinte écologiqúe ? Justifie ta réponse.

Understand the Context: Understand the context of the problem. $\newline$ We need to determine if $317 \, \text{kg}$ of $\text{CO}_2$ per passenger for a round-trip flight is considered a small or large ecological footprint. To do this, we need to compare this value to standard values for ecological footprints for similar activities or benchmarks provided by environmental agencies.
Research Standard Values: Research standard ecological footprint values. Without specific benchmarks, we cannot make a definitive conclusion. However, we can consider that air travel is generally known to have a high carbon footprint compared to other modes of transportation like car, bus, or train travel on a per-kilometer basis.
Compare Emissions: Compare the $\text{CO}_2$ emission to other modes of transportation. $\newline$ If we find that the $\text{CO}_2$ emission per passenger for the flight is significantly higher than emissions for the same journey by other means, we can conclude that the ecological footprint is large. Conversely, if it is lower or comparable, we might consider it small.
Make Qualitative Judgment: Make a qualitative judgment based on general knowledge. $\newline$ Since specific benchmarks are not provided, we can use general knowledge that a single flight's CO $2$ emissions are substantial, especially considering that $317 \, \text{kg}$ of CO $2$ is a considerable amount of greenhouse gas for a single passenger on a single trip. Therefore, we can qualitatively conclude that the ecological footprint is large.