What is a disadvantage of using gas chromatographya)it is expensive to perform. b)it takes a day or more to obtain results. c)it requires a large quantity of the substance. d)it doesn't provide the exact chemical composition.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

What is the role of dna ligase in the elongation of the lagging strand during dna replication?

What is gene expression control that occurs after the generation of rna