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Caffeine

Jennifer

Listening — Advanced Level
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Activity

Watch the video and answer the questions


  1. What does caffeine stimulate?

  2. When did caffeine become popular?

  3. What did the early Mesoamerican civilization use hundred years before ?

  4. How many milligrams of caffeine is considered safe for adults?

  5. What are adenosine molecules responsible for?

Discussion

Practice your writing skills by discussing the questions below


  1. What are the benefits of caffeine?

  2. When is caffeine considere lethal?

  3. Do you take caffeinated beverages? If yes, what are they?

    Jennifer

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