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:

1- biomes

2-environment

3-trees and flowers

5-pesticides

6-soil fertility

Sorry I don't know the exact answer of 4th question