Summarize natural selection using the terms
variation, competition, and fitness.

answer; i believe that the best answer is (secondary cardiac arrest due to

c

explanation:

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.