What can you understand about the air quality in the Aburra - ProProfs Discuss
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What can you understand about the air quality in the Aburra Valley? Air pollution is a problem everywhere and we talk about it in terms of good air quality or bad air quality. Ten years ago the air quality in Medellin was bad. Five years ago the air quality in Medellin was worse than ten years ago. Nowadays, the authorities are improving the air quality in the Aburra valley by many ways.

This question is part of QUiz questions over Comparatives and Superlatives
Asked by Mrescobar, Last updated: Feb 07, 2020

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mrescobar

Mrescobar

Answered Oct 31, 2018

All of the above.

In A we are comparing todays air quality with the air quality five years ago. In B were taking several years into account.
 

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