"Dead zones" in US coastal waters have grown 30-fold since 1960, according to a recent government report. This report refers to which of the following environmental pollution issues?

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.