1. Words adoptive = to become parent of a child that isn't your own claim

trillion = 1,000,000,000,000

undergo, undergone = experience , feel

unique = special

warehouse = building where many products are kept , before they are delivered to shops or customers

wide range = here: many kinds of products

worth = the value of something


19.
Words

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  absorb = take something in
  
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  according to = as reported by ...
  
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  accurate = exact
  
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  act decisively = to do something about a problem
  
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  agreement = promise by two or more countries to take action
  
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  announcement = official statement
  
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  atmosphere = mixture of gases that surrounds a planet
  
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  ban = forbid
  
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  break down = chemical change
  
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  cancer = serious disease in which cells in your body grow in an uncontrolled way
  
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  CFCs = chlorofluorocarbons = a gas used in refrigerators and spray cans; they are responsible for the destruction of the ozone layer
  
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  chlorine = greenish-yellow gas with a strong smell, that is also used to keep swimming pools clean; it is one of the gases that are responsible for the destruction of the ozone layer
  
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  completely = fully
  
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  compound = substance containing two or more atoms
  
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  decade = ten years
  
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  decrease = when something goes down
  
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  destruction = when something is damaged completely
  
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  discover = find for the first time
  
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  environmentalist = person who cares about nature and the world we live in
  
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  especially = above all
  
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