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Glossary

Do some words just make no sense?

Use this glossary to find out what they mean. Click on a letter below to see the entries, or click on ALL to see all of the entries.

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Entries 1 to 8 of 8

 
Carcinogen
Carcinoma
CFCs
Chronic hunger
Circuit breaker
Cirrhosis
Congress of the United States
Cytoplasm
 		  
CFCs
CFCs or Chlorofluorocarbons are chemical compounds containing chlorine, fluorine and carbon.
If released into the air, they are known to rise high into the atmosphere where they chemically break down ozone molecules in the ozone layer.

Before being banned as a result of international agreements, CFCs were widely used in fridges, as propellants in spray cans and in cleaning chemicals.
 
 

A close up of a medieval manuscript showing words in another language. The words make no sense.

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