Natural selection is considered the mechanism of evolution. What are the 4 essential components of natural selection and how are these components related to the forces of evolution (i. e., mutation, migration drift and selection)?

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive

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.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)