The ph of a nearby stream is tested and found to be basic. which ph could be a valid result from the testing of the stream? a. 5
b. 6 c. 7 d. 8

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves