Sharks - Mst Monira Khaton
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Sharks are fishes and they have a skeleton but sharks skeleton are made of light flexible cartilage. That's why sharks are called a group of cartilaginous skeleton elasmobranch fish, they have pectoral fin. Rays are the sister group of sharks. Sharks are appeared on the water world before 420 million years ago.
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| Author | Mst Monira Khaton |
|---|---|
| Publisher | Independently Published |
| Release year | 2020 |
| Cover type | Softcover |
| EAN | 9781651032237 |