Answer: D. it lies in a valley, surrounded by mountains, that traps in air pollutants over the city.
Explanation: Being in a valley results in air pollution being contained to an area.
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this shouldd help
https://en.wikipedia.org/wiki/Pablo_Neruda
Answer: D. Scythe was the fastest at cutting and harvesting grain from fields
Explanation: Scythe would be the best hand tool because it is used for cutting crops also having a long curved blade at the end.