Cells possess three basic types of rna: 1. messenger rna (mrna); 2. ribosomal rna (rrna); 3. transfer rna (trna)

your the dumbest b**tch ive ever seen

there is no

explanation:

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

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.