Concept explainers
Definition of a fossil and their use in the study of geology.
Answer to Problem 18TE
The remains of organic matter that are not decomposed by microorganisms are converted into biochemical sediments over a period of time. These sediments are known as fossils as they help to determine the Earth’s geologic history.
Explanation of Solution
A fossil is basically the remains of organic matter of early organic species. When some of their organic matter is not decomposed by bacteria, then over a period of time, it is converted into biochemical sediments known as fossils. Some examples are coal, oil and gas.
The fossils are used in the study of geology as they are made of remains of organic species from the past. They help to determine the Earth’s geologic history. They can indicate that from where and how sediment is formed or deposited. They additionally assist in classifying same kind of rocks from distinct places that are of comparable geologic age. Hence, fossils are very useful in the study of geology.
Conclusion:
Therefore, the remains of organic matter that are not decomposed by microorganisms are converted into biochemical sediments over a period of time. These sediments are known as fossils as they help to determine the Earth’s geologic history.
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