Question

III. Fill in the blanks:
1. Grasslands, forest, desert, etc. are the examples of _____
ecosystem
2. Living organisms can survive well only when the physical ______ is not impaired.
3.______ and ________ are recognized to aggravate the environmental degradation.
4. In India, the first oil well was drilled in ______at ______
(Assam).
5. BHC and DDT are ______
6._____ results in soil erosion​

Answer 1

Answer:

4) The colonial era saw the first oilfield being developed by the Assam Oil Company, a private entity, in Digboi in Tinsukia district of Assam, where oil was discovered barely eight years after Edwin L Drake drilled the world's first oil well in 1859 in Titusville, Pennsylvania, US