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
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.
No, fossil fuels (coal, oil and natural gas) can only be used once. For this reason they are called non-renewable sources of energy.
Fossils can be used as evidence for evolution because they can show the development of a species over a long period of time.
Fossil fuels are used to generate electricity in our homes and for to power our automobiles and other vehicles and power tools.
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.
It's called an index fossil.
a tag.
This is called an index fossil.
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.
Onced used ,it takes many millions of years to replace fossil fuels.
Index fossils.
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! :)
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.
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.
Yup! I used to write on mirrors and windows all the time!
The paragraph marker: ¶ is called a pilcrow.
asdf