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sweet-ann
4 days ago
15

Alex listed the typical steps of fossil formation. 1) An organism dies. 2) The remains fall to the bottom of the ocean. 3) The s

oft portions decay, and the hard portions remain. 4) The sediment becomes rock. Which statement describes the missing step? After step 3, layers of sediment cover the dead organism. After step 1, minerals dissolve the dead organism. After step 4, layers of sediment cover the dead organism. After step 2, minerals dissolve the dead organism.
Biology
2 answers:
enyata [1.7K]4 days ago
7 0
The answer is: Following step 3, sediments accumulate over the deceased organism. Fossilization is the process through which organisms are preserved as impressions in sedimentary rock. This occurrence is quite rare and necessitates specific conditions. Permineralization, one of the common fossilization methods, involves minerals permeating remains, creating detailed impressions of the organism. Once an organism perishes, it sinks to the ocean floor. While soft tissues decompose, harder structures like nails, bones, and hair endure. Subsequently, these bones are progressively enveloped by sediment, with fossil quality often hinging on sediment type and volume. River deltas offer abundant sediment, expediting fossilization. Clays and mud facilitate greater fossil detail, whereas sandy sediments obscure it. Sedimentation is succeeded by permineralization. As layers of sediment build up, the pressure turns the lower layers into rock due to mineral movement that solidifies the sediments. Minerals like calcite might replace bones and other durable parts, enabling long-term preservation. Fossils excavated by archaeologists are typically found nearer to the Earth's surface due to the uplift of rock layers caused by shifting continental plates.
-BARSIC- [1.9K]4 days ago
4 0
A.
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