9. describe the position of the vein(s) in each model. a. describe model 1.
b. describe model 2.

b is the answer and if you need further with anything message me

i think this picture will you.

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.