Rewrite the sentence so that it has a parallel structure. The cross old neighbor, attracted by Shiro's barking, had been an unseen and
enviously witness of the finding of the treasure.

The cross old neighbor, attracted by Shiro's barking, had been an unseen and (an) envious witness of the finding of the treasure.

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.

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