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Correct Answer: C) 1961.
Correct Answer: B) Commensalism.
Correct Answer: A) Ernst Haeckel.
Correct Answer: B) Bacteria.
Correct Answer: B) True.
Correct Answer: A) Sustainable agriculture.
Correct Answer: D) Grinding stone.
Correct Answer: B) Carbon dioxide.
Correct Answer: C) Solar.
Correct Answer: D) Wear a mask.
Correct Answer: D) Biodegradable.
Correct Answer: C) Due to _____ causing.
Correct Answer: C) Non-point source.
Correct Answer: B) Potassium.
Correct Answer: A) Open.
Correct Answer: A) The.
Correct Answer: D) Bhopal.
Correct Answer: A) Ozone.
Correct Answer: B) Father and mother.
Correct Answer: D) All of the above.
Correct Answer: C) Sad.
Correct Answer: A) Sunderlal Bahuguna.
Correct Answer: C) Social and Cultural.
Correct Answer: D) Trees.