What problem does the excerpt present?
Read this excerpt from "A Student's Guide to Global Climate
Change
Climate change will lead to more hot days and more heat
waves. As a result, people will need to use more air
conditioning to stay cool. As people use more air
conditioning, electricity shortages and blackouts could
increase. Because most electricity is currently produced by
burning fossil fuels, using more electricity to run air
conditioners will also add more greenhouse gases to the
atmosphere
There will be more hot days and heat waves in the future,
People will need air conditioning more often in the luture.
Power shortages and blackouts may increase.
Greenhouse gases are being added to the environment.