2. how does an electric pencil sharpener demonstrate some characteristics
of life, while not demonstrating others?

the answer is cell division : )

b a mature ovary of a plant.

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.