Permeable materials do not allow water to pass through. Examples include silt, gravel, and sand

i think that d. wind is the answer.   i missed the question when i answered a. currents.

c. the initial amount of money placed in the savings account

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.

i don't understand

explanation:

i don't understand your question