Answer:
Air pollution, Chances of forrest fire (causing damages to ecosystems and wildlife habitation. Also damages to homes that are in Forrest's), This also causes severe damage to timber crops. More disadvantages are: damaging vegetation, degrading water, deteriorating soils, and toxic gases.
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Answer: B, (ghost)
Explanation: Unsure of how 'apparition' was used in Line #3 of Alexander Pushkin's poem but I'm fairly sure that B (ghost) is your best bet due to the fact that the dictionary definition for apparition is a ghost or ghost-like image of a person.