What is the role of the cell membrane?
O to control the functions of the cell
O to provide a firm structure for the cell
O to control what enters and leaves the cell
DONE
Kall

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.