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Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages). They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil. If the species concerned were short-lived (in geological terms, lasting a few hundred thousand years), then it is certain that the sediments in question were deposited within that narrow time period. The shorter the lifespan of a species, the more precisely different sediments can be correlated, and so rapidly evolving types of fossils are particularly valuable. The best index fossils are common, easy-to-identify at species level, and have a broad distribution-otherwise the likelihood of finding and recognizing one in the two sediments is minor. --- Wikipedia
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What is the difference between a permanent marker and a regular marker?
A permanent marker was used to stay forever, but they don't. A regular marker is easy to wash off and doesn't stay for a very long time.
Are fossil fuel reusable?
No, fossil fuels (coal, oil and natural gas) can only be used once. For this reason they are called non-renewable sources of energy.
Is fossil evidence used for the Theory of Evolution?
Fossils can be used as evidence for evolution because they can show the development of a species over a long period of time.
What are fossil fuels used for?
Fossil fuels are used to generate electricity in our homes and for to power our automobiles and other vehicles and power tools.
What type of dating would be used to determine the age of rocks by using the fossil?
By using the geologic time scale. Certain organisms are only found during certain times and if a fossil of one of these organisms is found then you can determine the relative age of the fossil.
What is an organism used to identify a specific geologic time period called?
An organism used to identify a specific geologic time period is called an index fossil. Index fossils are used by geologists to narrow down the age of rocks and sediment layers based on the known age range of the fossil species.
A fossil that is used to date surrounding rock layers is?
This is called an index fossil.
What A marker used to identify a person in a photo is called?
a tag.
What is the difference between a permanent marker and a regular marker?
A permanent marker was used to stay forever, but they don't. A regular marker is easy to wash off and doesn't stay for a very long time.
What is a fossil used to date surrounding rock layers called?
A fossil used to date surrounding rock layers is called a index fossil. Index fossils are particularly useful for determining the relative ages of rock layers in different locations.
Why are resources also called fossil fuels?
Onced used ,it takes many millions of years to replace fossil fuels.
A fossil that is found in the rock layers of only one geologic age and that is used to establish the age of the rock layers?
This fossil is called a index fossil. It is a species that is easily recognizable, widespread, and existed for a short period of time. By determining the age of the rock layer where the index fossil is found, geologists can establish the approximate age of the surrounding rocks.
What is a time marker?
A time marker is like a time connective and is used in a piece of writing to make it more interesting instead of using the same words to start a sentence. eg. Finally.now,before,after,Firstly,Secondly,eventually,later.......and so on! :)
Is The geologic time scale divided by major changes in the fossil record true?
Yes, the geologic time scale is typically divided based on major changes in the fossil record, called biostratigraphy. These divisions are used to categorize different periods in Earth's history based on the types of organisms that lived during that time.
What is a skirt marker used for?
A skirt marker is a professional marking device that is used in tailoring. A skirt marker will assist in finding out the length of a skirt.
The formatting mark that appears for a new line when the manual line break is used is a?
The paragraph marker: ¶ is called a pilcrow.
How do you use a root fossil?
A fossil of a root can be used for a number things. They can help determine rainfall during a time period. They can also be used to determine environmental events.
