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The Earth is about 4.6 billion years old and the biodiversity on the planet has gone throughout many changes over millions of years. Scientists can tell about how old fossils are by the layers they find the fossils in.

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the law of superposition helps us understand the history of what has happened previously on earth

radiometric dating helps us find the accurate age of fossils

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The Earth is over 4 billion years old. The layer that is lowest on the rocks is the oldest.

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The law of superposition states that the lower the rock layer is, the older the fossils in that layer are. Scientists can determine the exact age of fossils in their rock layer by using radiometric dating.

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The different layers of rock help scientists find out what time period there from. Radiometric dating helps scientists find the exact age of the fossils.

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The earliest layer is always on the bottom, and the most recent layer is always on the top. The Geologic Time Scale represents the whole entire history of the Earth since it's formation, about 4.6 billion years ago.

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The law of superposition determines the ages of the rocks and which rocks are older. Another big idea of Earth's history can be used by timelines. A timeline is the order of Ancient history, which is shown on a line.

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The law of superposition allows scientist to compare the ages of fossils through the law of rock that it is in. It is important to know the order of events things happened in history in order to study it properly and put the pieces together

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The Earth is over 4 billion years old according to scientists which shows that many different organisms lived on earth. The Law of Superposition states that the lower the layer, the older it is.

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The law of superposition states that the lower the layer the older the organism or fossil is. The law of radiometric dating is used to specifically date things based on the things inside the fossil and it's condition for example carbon.

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Superposition is the law that helps us find the ages of rock layers, by saying that the lowest layer is the oldest. Radiometric dating is measuring the amount of carbon in the rocks to find the age.

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Superposition is a law that states that the lower layer of rock will always be older than the rock above it. Earth is about 4.6 Billion years old.

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The Law of Superposition gives scientists a relative idea on fossils' age in correlation to the surrounding rock layers. For example, the lower rock layers will always be older than the rock layers that are above that specific layer.
The Earth is over 4.6 billion years old which results in there being many organisms that have fossilized.