I believe C is the correct answer because stratigraphic means The branch of geology concerned with the positions of sedimentary rocks
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<span>Two types of treatments: type of seed and fire.
Type of seeds: 1. Known seed type that requires fire. 2. Known seed that is killed by far. 3. Experimental/unknown seed.
Fire treatments: 1. No fire. 2. Fire. </span>
by studying RNA, geneticists could learn about where genes begin and end on a chromosome. they could also learn about where genes are active in different types of the cells.