Biology, 26.05.2021 23:50 sergun252005
4. Scientists often use the relative positions of fossils in sedimentary rock layers to draw conclusions
about the sequential nature of groups of organisms in the fossil record. Why are scientists able to
use such observations as a key to the relative ages of fossils?
a. Sedimentary rocks are laid down in layers, so the oldest layers in an undisturbed
rock bed will be located beneath upper layers.
b. Even when sedimentary rock layers are disturbed, the oldest layer is always
deposited on top of the youngest rock layer.
c. Younger rock layers are always deposited under older layers.
d. Weathering and erosion expose fossils making them easier to examine.
Answers: 1
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For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.
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Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle
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Ineed the answer asap. in order to be considered alive, an organism must simultaneously possess the characteristics of homeostasis, heredity, cells, reproduction, and
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What is the average speed of a car that traveled 300.0 miles in 5.5 hours
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4. Scientists often use the relative positions of fossils in sedimentary rock layers to draw conclus...
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