Which of the following is the most vital component of all living forms?
Biogas mainly consists of:
Fossils fuels and metallic minerals are renewable resources.
The most exploited nonrenewable resource is-
- Terrestrial biosphere
- Fossil fuel
During the winter season, a person sleeps in a closed room with burning firewood. He experiences nausea and giddiness. The emission of which of the following gas is responsible for it?
- Nitrous oxide
- Sulphur dioxide
- Carbon monoxide