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Science

Matter cycles

In this Class 9 Science topic, students explore how matter continuously moves through Earth’s atmosphere, water, soil, rocks, and living organisms. They learn about cycles such as the water, carbon, and nitrogen cycles, and examine processes including evaporation, photosynthesis, respiration, decomposition, and nutrient transfer through food chains. The topic connects these movements to Earth as a system, showing how energy flows while matter is recycled and how human activities can affect natural balance.

Easy · Level 1 · 2 questions

Practice questions

01What is the basic idea of a circular economy?

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02What is the main difference between reuse and recycling?

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