Which of the following is a renewable natural resource?

Which gas is most important for human breathing?

Which of the following is a non-renewable resource?

The largest source of fresh water on Earth is:

Which of these is a fossil fuel?

Which natural resource is used to make paper?

Which of the following is a metallic mineral?

Which is the primary source of energy for life on Earth?

What do we get from forests?

Which of the following practices helps in saving natural resources?