The outermost layer of the earth's atmosphere is _______.
1). stratosphere
2). troposphere
3). mesosphere
4). exosphere
1. Energy resources derived from natural organic materials are called
3. The Primary Consumers are also called as
4. The cause of Bhopal disaster is
5. Coal is a __________ resource.
6. Good urban planning is essential for __________ land use.
8. In grassland ecosystem, the pyramid of biomass is
9. Drinking of fluoride containing water results :
10. Which Indian scientist has got a Nobel Prize for his contribution in physics