The "twisted ladder" shape of the DNA molecule is called a _.

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

the endomembrane system i think

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.