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What environmental problems worry us nowadays?
What causes the greenhouse effect?
What is the most important consequence of the greenhouse effect?
What does global warming mean?
What is ozone?
What is the ozone layer?
How can we protect the ozone layer?
What could the melting polar caps result in?
What can be done to save endangered species?
What dangers do the forests in Europe have to face?
What can be done to protect our forests?
Why do people cut down forests?
Why is destroying forests dangerous?
What endangeres the seas?
How would you reduce pollution in your town?
What do you do to protect the environment?
