Notes for the chapter :OUR ENVIRONMENT

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Posted by Love Preet 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
CBSE Class 10 Science Revision Notes Chapter 15 Our Environment
- Environment means everything which surrounds us. It may include living (biotic) and non-living (abiotic) components.
- Biotic : Plants and animals. Abiotic : Air, water etc.
- Environment affect the life and development of an organism in its natural habitat & vice a versa.
- Substances that can be decomposed by the action of micro-organism like bacteria are called bio-degredable. E.g. organic wastes.
- Substances which cannot be decomposed by the action of microorganisms are called non-biodegradable.
- Example of biodegradable wastes : cattle dung, cotton, jute, paper, fruit and vegetable peels, leaves etc.
- Examples of non-biodegradable wastes : plastics, polythene bags, synthetic fibres, metals, radioactive wastes.
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