By which gases is air pollution caused?
- ASulphur dioxide.
- BCarbon dioxide.
- CNitrogen oxide.
- DNitrogen dioxide.
By which gases is air pollution caused?
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Give examples of renewable resources.
The area covering states like Uttar Pradesh & Bihar is the _____________ soil type.

In sedimentary rocks, minerals occur is:
The total number of tiger reserves in India are:
Materials in the environment which have the potential to satisfy human needs, but human beings do not have the appropriate technology to access them are called:
Oceanic tides are used to generate:
The areas in India which are almost devoid of economic minerals are:
The availability of resources is a necessary condition for the development of:
Which type of agriculture practice is famous in North-Eastern states like Assam, Meghalaya, Mizoram and Nagaland?