Monday, March 23, 2026

What is petrichor?


 

2 comments:

  1. Petrichor is the smell we noticed before it rains, due of a specific oil which the plants released when the soil is dry. This oil has a bacteria which produce this compound call geosmin, that has that distinctive smell that tell us it is going to rain.

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    Replies
    1. Thanks for this very accurate answer, Gaby.
      See some grammar corrections below:
      Petrichor is the smell we NOTICE before it rains, due TO a specific oil which the plants RELEASE when the soil is dry. This oil has a bacteria which produceS this compound callED geosmin, that has that distinctive smell that tellS us it is going to rain.

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