Fossils are primarily found in sedimentary rock for the following reasons:
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Igneous rocks form under conditions too hot for lifeforms. - This is accurate because igneous rocks form from molten rock that cools and solidifies, which occurs at very high temperatures that would destroy any organic material.
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Sedimentary rocks form at the Earth’s surface. - Correct. Sedimentary rocks are formed from the accumulation of sediments at or near the Earth's surface, where conditions are suitable for preserving organic material.
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Sedimentary rocks form in layers. - This is true as well. The process of sedimentation typically results in layered deposits, which can encapsulate and preserve fossils in the layers where organisms were buried.
The statement "All fossilized organisms lived in the sea" is not correct, as fossils can be found from a variety of environments, including terrestrial settings, not just marine.
Therefore, the applicable reasons for why fossils are primarily found in sedimentary rock are:
- Igneous rocks form under conditions too hot for lifeforms.
- Sedimentary rocks form at the Earth’s surface.
- Sedimentary rocks form in layers.