The greenhouse effect
is based on greenhouse gases.
causes climate change.
makes life on the planet possible.
keeps the planet's temperature approximately 30 °C warmer.
is caused by human activity.

Greenhouse gases include
carbon dioxide.
ozone.
methane.
water vapor.
sulfur oxide.

Climate change
is based on the increase in greenhouse gases.
is caused by human activity.
increases the planet's average temperature.

Climate change is predicted to
cause an increase in global average temperature.
cause the ozone layer to become thinner.
increase the occurrence of extreme weather phenomena.
increase the acidification of water ecosystems.
melt down large parts of the planet's glaciers.
make some plant and animal species to become extinct.

The goal of international climate agreements is to
make people notice climate change.
reduce the amount of greenhouse gases in the atmosphere.
stop the production of greenhouse gases.
decrease greenhouse gas emissions.

Maximum: 20 points.