本题目来源于试卷: IB ESS Unit 1 Foundations of ESS，类别为 IB环境系统与社会
[单选题]
Identify which of the fo2rrri0w48k/ ksk1 i fxllowg p/tltr0va48 4lo3g5 stw /ujing is not considered a pollutant.
A. Light
B. Natural gas
C. Invasive species
D. Sewage
参考答案: B
本题详细解析:
A pollutant is something humans add to thpfbf/p dbcy ny9b,s :--*e/aie environment that has an impact on the organisms in the environment, and that cannot be broken down faster than the rate at which it,d fnya-/* bfypc-ib:pb/9e s is being added.
Natural gas itself is not a pollutant unless it is combusted to form Carbon Dioxide. Option A is a pollutant in many circumstances, including in cities at night. Option C is considered a pollutant to ecosystems it is not native to. Option D is considered pollution in both soil and water.
| 
