Which gas is mainly responsible for global warming?
Which of the following is a renewable resource?
What do we call the cutting down of trees on a large scale?
Which layer of the atmosphere protects us from harmful UV rays?
Which of these helps in reducing air pollution?
What is the main source of energy for life on Earth?
Which animal is known as an endangered species?
What should we do to save water?
Which of these is biodegradable waste?
What is planting trees called?
