When scientists compare molecular clocks between species, they have to use the same segment of DNA. Which of these statements would explain why that is necessary?

lipid

explanation:

that is true   : ) hope this you

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.

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.