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.
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(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.
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Analyze how the four requirements for life were identified by scientists
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4. Scientists often use the relative positions of fossils in sedimentary rock layers to draw conclus...
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