Which of the following is made up of dna and histones?

chromatin

gene

purines

dna

ok

explanation:

a community that experiences major changes undergoes progress

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.