Final answer:
The possible depth of site e is any depth between the depths of site a and site b. The possible depth of site e is any depth between the depths of site a and site b.
Step-by-step explanation:
The possible depth of site e is any depth between the depths of site a and site b. This means that site e can be located at any point between the depths of site a and site b on the number line.
Paleontologists use evidence of changes in the fossil record and various dating methods to conclude that a layer is related to a mass extinction. Relative and absolute dating techniques provide a comprehensive history of Earth's geological past and life evolution. Archeologists' systematic excavation methods support the reconstruction of ancient environments and relationships.
Paleontologists may conclude that a particular layer is likely correlated to a mass extinction based on the evidence of a sudden and distinct change in the fossil record, such as a sharp decrease in the variety and number of species or the abundance of certain types of fossils. Confirmation may come through various dating methods, analyzing the type and layer of rock, and comparing it to known periods of mass extinctions within the stratigraphic sequence. When a layer shows a dramatic change that aligns with the timing of a known mass extinction, it provides strong evidence for paleontologists to make this determination.
Dating methods used include both relative and absolute dating techniques. Relative dating allows paleontologists to determine the order of rock layers and the fossils within them to establish a sequential history. Absolute dating methods, such as radiometric dating, can provide a more precise age. Together, these methods help establish a clearer picture of the Earth's history and the evolution of life through different geological eras.
Archeologists rely on a systematic approach when excavating, utilizing a grid system and meticulously cataloging artifacts and samples. This methodology aids in reconstructing paleoenvironments and understanding the historic relationships between plants and people, as well as animal remains, by looking at ecofacts alongside traditional artifacts.