see, http://en.wikipedia.org/wiki/Index_fossils
It takes millions of years for amber to become a fossil.
Coal and various oils are used to make medicine both in the process and actuality. They are also used to make toothpaste and even cleaning products.
Fossil fuels are not made from the fossils of dinosaurs.
A worldwide infrastructure extracts, processes, and transports fossil fuels. (Apex)
Indirectly, yes. Fossil fuels are still a popular fuel source for many such factories, although you would be less likely to see it used in a paper factory. If you are looking for an economic good which is directly related to petroleum (the most commonly altered fossil fuel) then anything plastic, and of course petroleum jelly would be on your list.
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.
hiii
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.
To be an index fossil, it must be widespread, commonly found (sometimes in groups) and have a short life span for which it lived. If a fossil meets all three of these requirements, it is considered an index fossil.
would a jellyfish make a good fossil
C). a narrow time range and a wide geographic range
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.
A good index fossil possesses several key characteristics: it must be easily identifiable, widespread across various geographic regions, and exist for a relatively short, well-defined time period. This allows geologists to correlate the age of rock layers across different locations effectively. Additionally, the species should have a hard part, like shells or bones, to enhance fossilization potential. These traits make index fossils valuable for establishing the relative ages of sedimentary rock layers.
Phacops rana is considered a good index fossil because it lived during a specific geological period, primarily the Devonian, which allows geologists to date rock layers accurately. Its widespread distribution and distinctive morphology make it easily recognizable and useful for correlating the ages of different rock formations. Additionally, it existed for a relatively short geological time span, enhancing its effectiveness in identifying and dating specific strata.
fossil
Organisms that formed index fossils existed during specific time periods in Earth's history. These organisms lived in abundance, had a widespread distribution, and have distinctive features that make them easy to identify in the fossil record. By studying these index fossils, scientists can determine the relative age of the rocks in which they are found.
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