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Well, it almost sounds like a rhetorical question. Who can? Well, probably someone higher in power with the help of technology. They already have cameras being built into the suits due to the reports of unfair treatment from police officers. We could possibly have people from the government watch over footage from the cameras or have supervisors go with them. Anyway, that's my possible answer/opinion to that subject. Maybe that can give you some insight (-:
Answer:
The year the Greek city of Helike disappeared is -⅕ times the year the US Civil War ended. Let w represent the year the Civil War ended.
Explanation:
Some of the factors would be introduction of non native species, pollution, overgrazing, chemical agents and habitat loss