In which of the following are most of the fossils found?
Correct answer: D. Sedimentary rocks
- A. Metamorphic rocks
- B. Soil
- C. Volcanic mountains
- D. Sedimentary rocks
Explanation
Option D: Sedimentary rocks are the most common source of fossils because they form through the deposition of materials like sand, mud, and organic matter. These sediments can rapidly cover dead organisms, protecting them from decay and allowing fossilization. The slow compaction of these materials further aids in preserving the remains.Option A: Metamorphic rocks are not ideal for fossil preservation due to the intense heat and pressure they undergo, which often destroys fossils.Option B: While soil can contain fossils, they are not as prevalent as in sedimentary rocks. Fossils in soil are generally found in specific, unique environments.Option C: Volcanic mountains do not typically contain fossils due to their formation processes, although volcanic ash layers can sometimes aid in preserving buried organisms.
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Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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