[answer correctly for brainliest]
Index fossils are used to determine the relative ages of roc...
Biology, 07.03.2020 01:10 littlesami105
[answer correctly for brainliest]
Index fossils are used to determine the relative ages of rock and fossils and are also used to
A) define the boundaries between geologic periods
B) determine the absolute age of surrounding rock
C) identify the fossil species found in rock layers
D) infer evolutionary relationships between organisms
Answers: 3
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Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
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