Ecological backlash (or Ecological Boomerang) is:
- AHeat emission due to bomb explosion
- BProduction of useful ecological effect by a previously useful chemical
- CFormation of secondary pollutant from reaction of primary pollutants
- DProduction of adverse ecological effect by a previously useful chemical
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$(c)$. The Bishnoi community belongs to Odisha and played a major role in the conservation of forests.
$(d)$. The Chipko movement started in the Garhwal Himalayas.
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