Depression. they suffer from depression
D. the removal or chemical alteration of the majority of a contaminant
Are you looking for an appropriate word to name this?
I think that a good name is "propaganda", especially when the information is of political relevance.
In the past (and to some extend present) some totalitarian or non-democratic states used propaganda to shape public opinion.
Answer: Source amnesia
Explanation:
Source amnesia is the inability to remember where, when or how recent an information was acquired while retaining the effective knowledge.
Answer:
The answer is 3.60 - 70 percent water