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प्रश्न
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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उत्तर
| 1. | Biotic factor | Animals |
| 2. | Sewage | Water Pollution |
| 3. | Fertilizers | Land pollution |
| 4. | Desert | Terrestrial Ecosystem |
| 5. | Smoke | Air pollution |
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संबंधित प्रश्न
What is the role of decomposers in an ecosystem?
Fill up the blank with the words given:
Parrot eats only ______ products.
Human and animal wastes are examples of non-biodegradable waste.
What happens to the dead organisms of animals and plants?
Explain the role of decomposers in the environment?
What are decomposers? What will be the consequence of their absence in an ecosystem?
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 names of animals written in the inner ring of figure. Within the second ring write the types of food they eat and the category to which they belong (based on the eating habit) in the outermost ring. One example has been worked out for you. Use red, green and blue colours for writing.
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 |
Give reason:
Monocytes are called scavengers.
