The principal purpose of is to obtain site clean-up by government contract or orders to responsible parties (often referred to as "RPs"), until one or more of the RPs can be found to reimburse the government for their handling of the matter and for damages to natural resources.

CERCLA

Explanation:

Comprehensive Environmental Response, Compensation and Liability Act which is called by the term, Superfund was passed in 1980 to deal with releases or potential releases of hazardous chemicals that could harm public health or the environment. It attempts to determine the party responsible for any pollution. The next important concern is to clean-up the site when no one found responsible for the waste.

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.

answer; ///self- learning;