Asthma comes from the Greek word asthma, which means “to pant.” How does this meaning relate to the definition of asthma?

This relates to the definition of the word because asthma is a condition which causes difficulty in breathing.  

Usually if you're panting, it is hard to breathe and if you have asthma it can be hard to breathe at times. Sometimes you may pant.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

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