Q. No.Dinosaurs became extinct during the geological period:
1. Carboniferous 2. Jurassic 3. Cretaceous 4. Tertiary
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| 1. | Pareiasaurus | 2. | Pelycosaur |
| 3. | Ichthyosaurus | 4. | Archosaurus |
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| I: | Climatic changes killed them |
| II: | Most of them evolved into birds |
| 1. | I only | 2. | II only |
| 3. | Both I and II | 4. | Neither I nor II |
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| 1. | 15 mya | 2. | 20 mya |
| 3. | 25 mya | 4. | 30 mya |
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| 1. | Western Africa | 2. | Eastern African grasslands |
| 3. | South America | 4. | South East Asia |
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| 1. | Homo habilis | 2. | Homo erectus |
| 3. | Homo ergaster | 4. | Homo neanderthelensis |
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| 1. | Tanzania; 2 | 2. | Java; 1.5 |
| 3. | Ethiopia; 1.5 | 4. | Australia; 2 |
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| 1. | Cranial capacity of around 1400 cc |
| 2. | Lived in East and Central Africa |
| 3. | Used hides to protect their bodies |
| 4. | Buried their dead |
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