Q.1.
What is the ozone layer?
Q.2.
How is hydroelectricity produced?
Q.3.
What is the power produced by the sun called?
Q.4.
Which of these is NOT an environmentally-friendly method of producing electricity?
Q.5.
Which of these human activities is NOT causing global warming?
Q.6.
Which of these effects does burning fossil fuels have on the environment?
Q.7.
Which of these is NOT due to global warming?
Q.8.
Why are the rainforests being chopped down?
Q.9.
What have most governments agreed to do to help stop global warming?
Q.10.
What type of harmful gases surround the Earth?