In the deep ocean layer, the temperature and salinity of the water is options to anwser
the same
continues to decrease rapidly

Option 2:- continues to decrease rapidly

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.