The plunger of a micropipettor should be depressed to the second stop after the tip is lowered below the surface of the dye in order to uptake the desired amount of liquid.
true or false?

its 42

i say its d?

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.

whats the drop down answers ?

explanation: