How Nature Works in Harmony
CBSE · Class 8 · Science
Complete topic list for How Nature Works in Harmony in CBSE Class 8 Science. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in How Nature Works in Harmony
1. Habitat, Biotic and Abiotic Components
- A habitat is a place where an organism lives and gets the right conditions for survival.
- Examples of habitats include the bark of a tree, a pond, a forest, and farmland.
- Biotic components are living beings in a habitat, such as plants, animals, and microorganisms.
2. Population, Community, and Ecosystem
- A population is a group of the same kind of organisms living together in a habitat at a given time.
- A community comprises different populations sharing the same habitat.
- An ecosystem is formed by the interaction of biotic and abiotic components in an area.
3. Producers, Consumers, and Decomposers
- Green plants make their own food by photosynthesis and are called producers or autotrophs.
- Consumers or heterotrophs cannot make their own food and depend on others for food.
- Herbivores eat only plants, such as deer and hare.
4. Food Chain, Food Web, and Trophic Levels
- A food chain is a simple sequence showing who eats whom in an ecosystem.
- Grass → Grasshopper → Frog → Snake → Eagle is an example of a food chain.
- Food chains are often linear, but in nature many chains are connected.
Key Concepts
Central concept: Ecosystem and interactions in nature
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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