CBSE Class 10 Science Chapter 15 Our Environment Revision Notes

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CBSE Class 10 Science Chapter 15 Our Environment Revision Notes

 

Revision is one of the most important aspects of learning as it helps you to remember facts, figures, and topics that you have covered earlier. Students are always advised to summarize whatever they have learned as Revision Notes. CBSE Class 10 Science Chapter 15 Our Environment Revision Notes are very crucial for the students of 10th class to clear their doubts and excel in their examination.

We, at Swiflearn, provide students the best CBSE Class 10 Science Chapter 15 Our Environment Revision Notes that will help them to frame a better understanding of the topic. These Revision Notes for CBSE Class 10 Science Chapter 15 Our Environment are prepared by our excellent teachers at Swiflearn, in accordance with the Class 10 Science Syllabus and CBSE guidelines. Students can use CBSE Class 10 Science Chapter 15 Our Environment Revision Notes to revise all their previously prepared chapters and concepts and hence secure good marks in their examinations.

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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 affects the life and development of an organism in its natural habitat & vice versa.

● Substances that can be decomposed by the action of micro-organisms like bacteria are called bio-degradable. E.g. organic wastes.

● Substances that cannot be decomposed by the action of microorganisms are called non-biodegradable.

● Examples of biodegradable wastes: cattle dung, cotton, jute, paper, fruit and vegetable peels, leaves, etc.

● Examples of non-biodegradable wastes: plastics, polythene bags, synthetic fibers, metals, radioactive wastes.

 

 

Ecosystem and Its Component

 

All the interacting living organisms in an area together with non-living components form an ecosystem. So an ecosystem consists of both biotic(living creatures) and abiotic components like temperature, rainfall, wind, soil, etc.

 

● All living organisms are classified on the basis of nutrition.

1. Producers: All green plants, blue-green algae can produce their food (Sugar & starch) from inorganic substances using light energy (Photosynthesis).

2. Consumers: Include organisms that depend on the producers either directly or indirectly for their sustenance. Consumers depend on others for food.

3. Decomposers: Fungi & Bacteria’s which break down(decompose) the dead plant, animals complex compounds into the simpler one. Thus decomposers help in the replenishment

 

CBSE Class 10 Science Chapter 15 Our Environment Revision Notes PDF

 

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