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Question
Match the following
| 1. | Biotic factor | Terrestrial Ecosystem |
| 2. | Sewage | Land pollution |
| 3. | Fertilizers | Air pollution |
| 4. | Desert | Water Pollution |
| 5. | Smoke | Animals |
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Solution
| 1. | Biotic factor | Animals |
| 2. | Sewage | Water Pollution |
| 3. | Fertilizers | Land pollution |
| 4. | Desert | Terrestrial Ecosystem |
| 5. | Smoke | Air pollution |
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Differentiate between herbivores, carnivores, and omnivores. Give two examples of each
Fill up the blank with the words given:
Tiger is a __________ because it eats only meat.
Which of these organisms are the most important decomposers in an ecosystem?
Explain the role of decomposers in the environment?
Given below are names of some animals.
- Goat
- Human beings
- Cockroach
- Eagle
Which of the above animals form a pair of omnivores?
Read the clues and fill up the blanks given below each of them.
Animals which eat only plants and plant products.
H E ___ B ___ ___ ___ ___ E ___
Read the clues and fill up the blanks given below each of them.
Animals which eat both plants and animals.
___ M N I ___ O ___ ___ ___
Match the following Column I with Column II.
| Column I | Column II |
| A. Mesozoic | (i) First land vertebrates |
| B. Devonian | (ii) Proliferation of reptiles |
| C. Palaeocene | (iii) Raise of modern mammals |
| D. Permian | (iv) Radiation of primitive mammals |
| (v) 166 million years |
