Seed cracker birds have either large beaks or small beaks. they do not have medium-sized beaks because medium-sized beaks do not allow for adequate cracking of seeds.
a. disruptive selection
b. directional selection
c. stabilizing selection
*WILL MARK AS BRAINLIEST*

the answer is b)3/8x+1

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.