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Studying Ocean Floor Sediments |
| edHelper's suggested reading level: | grades 4 to 6 | |
| Flesch-Kincaid grade level: | 5.42 |
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Studying Ocean Floor Sediments
By Cindy Grigg |
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1 How do scientists know what the Earth was like long ago? One way is to study fossils of plants and animals that lived long ago. These fossils can be large - like dinosaur fossils - or they can be small. Ships take core samples from the ocean floor. Much of the sediment that makes up the ocean floor is the remains of tiny marine animals. When the animals died, their shells settled to the bottom of the ocean. |
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