Take the climate change quiz

In better news, Earth’s ozone layer seems to be restoring itself. The ozone layer protects Earth from damaging ultraviolet rays. Scientists have been worried about the depletion of our ozone layer since the 1980’s due to a hole forming in it. Chemicals like chlorofluorocarbons, which used to be found in refrigerators, have caused a hole to form in the layer. Since 1989, these chemicals have been banned and are starting to phase out of our atmosphere. If the policies that are banning harmful, ozone-depleting chemicals, the layer should be restored by 2040 for the majority of the world. Unfortunately, it may take longer for the ozone to recover in the arctic. This may be a big step towards emitting less greenhouse gasses and limiting the effects of climate change. Participants

How much of the world’s population see climate change as a threat to their country over the next 20 years?

A: 25%

B: 45%

C: 65%

What is the main cause of global warming?

A: rising levels of greenhouse gasses

B: energy radiated from sun

C: natural warming of Earth

During the past 40 years, the amount of oil and natural gas remaining in known reserves:

A: reduced more than half

B: remained the same

C: more than doubled