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Anti- evolutionary thinkers sometimes argue that natural selection could not produce a complex structure like the vertebrate eye.They claim that all of the parts of the eye must have arisen at once,asking why natural selection would favor the development of part of an eye that is not yet capable of forming a focused image.Which of the following statements is consistent with a survey of eye structure in the molluscs?
Layers Deposited
Stratified accumulations of materials such as sediments, volcanic ash, or ice, that settle and build up over time.
Youngest Layer
the most recent geological layer, usually found at the top of a sequence in stratigraphy.
Oldest Layer
Pertains to the earliest or first-formed layer of sediment or rock in a sequence, indicating the earliest period of deposition.
Numbered Units
Quantitative values assigned to items or units in order to denote quantity, order, or position.
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