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Option 4 : Bacteria
The correct answer is 4 i.e. Bacteria.
Explanation:
- Ecosystem:
- It is a self-contaminated unit of living things (plants, animals, and decomposes), and their non-living environment (soil, air, and water).
- Examples of ecosystems are a grassland, a forest, a desert, a mountain, a pond, and sea.
- All the ecosystem are made up of two main components:
- Abiotic components
- Biotic components
Systems Importances Abiotic components - The abiotic components of an ecosystem include the physical environment like soil, water, and air along with the inorganic substances like carbon dioxide, nitrogen, oxygen, water, etc.
- The physical factors or climatic factors like light, temperature, pressure, and humidity are also considered abiotic components of the ecosystem.
Biotic components - The biotic components of an ecosystem are a community of organisms, which is made up of many different inter-dependent populations.
- The biotic community of an ecosystem includes three types of organisms:
- Producer organisms
- Consumer organisms
- Decomposer organisms
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