In natural ecosystem, decomposers include
1). only microscopic animals
2). only bacteria and fungi
3). the above two types organisms plus microscopic animals
4). only the above two types of organisms
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1. The period of revolution of a geo stationary satellite is
2. In sunlight a rose appears red. In green light the same rose appears :
3. Which of the following principle is used to produce low temperatures ?
4. A nephridium of an earthworm drains materials directly from the
5. The temperature of oxyacetylene flame is around
7. Aspirin is
8. Clear nights are colder than cloudy nights because of
9. Which one of the following instruments is used to study dispersion of light ?
10. If a copper wire Is increased to double its length Its resistance will become