The Following Questions Refer to the Paragraph Below

question 29

Multiple Choice

The following questions refer to the paragraph below.
A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire time that terrestrial life has existed. Researchers wish to locate and study the terrestrial organisms fossilized in this core. The core is illustrated as a vertical column, with the top of the column representing the most recent strata and the bottom representing the time when land was first colonized by life.

Figure 25.2
-Assuming the existence of fossilized markers for each of the following chemicals, what is the sequence in which they should be found in this sediment core, working from ancient sediments to recent sediments?
1) chitin coupled with protein
2) chlorophyll
3) bone
4) cellulose

• A) 2, 4, 3, 1
• B) 2, 4, 1, 3
• C) 4, 2, 1, 3
• D) 4, 2, 3, 1

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