The deepest strata of the earth contain fossils that are?
Correct answer: D. Old and simple
- A. Young and simple
- B. Old and complex
- C. Young and complex
- D. Old and simple
Explanation
The deepest strata of the Earth typically contain fossils that are 'old and simple.' This is explained by the Law of Superposition, which states that in undisturbed sedimentary rock layers, the oldest rocks and fossils are located in the deepest layers. As you move upward through the strata, you encounter progressively younger rocks and fossils. The organisms from the deepest layers are generally simpler, as life on Earth evolved from simple to more complex forms over time. This is why Option D is correct, and the other options are incorrect because they do not accurately describe the characteristics of fossils found in the deepest strata.
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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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