# Earth as a System: Energy, Matter, and Life — Class 9 Practice Questions

NCERT Class 9 Science Chapter 13 practice questions with answers. This page provides a comprehensive review of Chapter 13, "Earth as a System: Energy

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# Earth as a System: Energy, Matter, and Life practice questions

## Which of the following is the primary source of energy for all life on Earth?

## The question you missed is the one worth teaching.

## Related chapters

Class 9 Science · Chapter 13

This page provides a comprehensive review of Chapter 13, "Earth as a System: Energy, Matter, and Life," from the NEW NCERT Class 9 Science textbook, "Exploration." This chapter delves into the intricate interconnections between Earth's various spheres (the atmosphere, hydrosphere, lithosphere, and biosphere) and how energy flows and matter cycles through them. It explores fundamental concepts such as the role of solar energy, biogeochemical cycles (water, carbon, nitrogen, oxygen), the greenhouse effect, ozone layer, and the impact of human activities on these vital systems. The questions are designed to test understanding of these core principles and their real-world implications.

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- NCERT Solutions
- NCERT Science
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- Chapter 13
- NCERT Class 9 Science textbook: Exploration : Chapter 13: Earth as a System: Energy, Matter, and Life

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