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What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
Which fossil fuel would be the hardest to do without?
It would likely be oil, as it is the most versatile and widely used fossil fuel. Oil is essential for transportation, heating, electricity generation, and various industrial processes. Finding alternative sources for all these applications would be the most challenging compared to other fossil fuels.
What does fossil fuel transform to?
stupid people would ask these questions . why would i know
How far apart would two successive index contours be on a map with a contour interval of 5 meters?
Two successive index contours would be 10 meters apart on a map with a contour interval of 5 meters. This means that each index contour line represents a change in elevation of 10 meters from the next adjacent line.
What would happen if there were no fossil fuels?
We will have to use renewable energy like solar, wind and geothermal power and continue to use nuclear power. We also must use electric or hydrogen cars because without fossil fuels we will not have gasoline.Life would be different.
What is fossils organisms that lived a short period of time called?
They are called index fossils.
Would a shark tooth make a good index fossil Why or Why not?
It depends on how old the tooth is,but other than that,unless it's a rare shark,it wouldn't make a very good index fossil.
What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
Which characteristics of a fossil would you make it useful as an index fossil in determining the relative age of widely separated rock layers?
C). a narrow time range and a wide geographic range
What type of organism would be most useful as an index fossil?
Those that have hard parts that fossilize, are plentiful, ubiquitous and evolve rapidly.
Would horseshoe crabs be useful as an index fossils?
No, Index fossils are used to date certain rock layers where the fossil is found. So it's usefull when you can find a certain index fossil only in a small period of time. So you can get the most precise dating for the rock layer. Horseshoe crabs are known as a 'living fossil', the first fossils of horse shoe crabs are found 450 millions years ago. So when you find a fossil of a horse shoe crab in a rock or sediment, you can't say anything about the age of the rock.
Why would polar bears not make good index fossils?
Polar bears would not make good index fossils because they have a relatively short geological lifespan, as they only evolved around 500,000 years ago. Additionally, their limited habitat in the Arctic makes them less widespread compared to organisms that thrived in diverse environments. For a fossil to be considered a good index fossil, it should represent a species that existed over a broad time frame and across various locations, which polar bears do not.
Why would a dinosaur with feathers be a bad index fossil?
Dinosaurs with feathers have been found through a relatively wide range of geologic time. Not counting birds feathered dinosaurs can be found from the Jurassic period to the end of the Cretaceous period.
Which fossil would most likely make the best index fossil?
A good index fossil is one of an organism that rapidly evolves and is widespread throughout a geologic time period or periods. This makes it useful in determining the age of the rock formation in which it is contained.
What is index divisor?
The index divisor is used to adjust the index for corporate actions that would affect the index level but would not reflect changes in market conditions.
Would a pigeon or a penguin make a better index fossil for the present day?
A pigeon would make a better index fossil for the present day due to its widespread distribution and adaptability to various environments, which allows for a more extensive range of fossil evidence. In contrast, penguins are primarily found in the Southern Hemisphere, limiting their geographical representation. Additionally, pigeons have a relatively short generation time and numerous species, making it easier to correlate their fossils with specific time periods. Overall, pigeons provide a broader and more relevant context for understanding current ecological conditions.
How are fossils organized in the fossil record?
Paleontologists look for index fossils in fossil bearing sedimentary rock. Index fossils are organisms that were widespread, rapidly evolving, and only existed for a short period of time as evidenced by their appearance in the fossil record of specific rock strata. The appearance of a fossil alongside an index fossil gives a rough approximation of the age of the fossil in relative terms as it would appear on the geologic time scale. The appearance of the same fossil alongside index fossils of different geologic ages means that the fossil organism spanned multiple geologic time periods. Associations of specific strata alongside radiographically datable igneous and metamorphic rock determines the absolute age of a fossil.
