Muscle contraction enables motile animals to move around, usually by working in combination with a support structure called a ___?

i do not know and i have a 100 in this class

answer; i believe the correct answer is (a)0

what in the weirdo : o

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.