Scientists choose to collect the smog at four different locations to allow them assess the smog from different region.
<h3>What is the role of Smog Collectors?</h3>
These are professional that examines scientific data that was collected by people on smog to assess the air we breathe.
Therefore, the scientists choose to collect the smog at four different locations to allow them access the smog from different region.
Read more about Smog
<em>brainly.com/question/22804256</em>
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Because crop 'waste' is waste only because you can't sell it or eat it.
Unlike other forms of waste, it's not toxic and it's not a pollutant. The
'wasted' part of the crop is intentionally plowed back into the ground in
many cases. It returns nutrients to the soil that were extracted to grow the
crop, and thus serves to partially replenish the soil for the next year's crop.
The first portion of the galaxy was the halo.
I hope this helps.