Module 9 The Biosphere of Life
Explore the chapters to learn the unit 1 content.
Lesson 4.9.5
Lesson 5 - The Recycling of Matter
Get Focused
Energy continuously enters the Earth's biosphere from the sun but matter does not ? Why don't living systems run out of the matter that makes up the organic molecules necessary for life processes ? In this lesson we will look at the cycling of matter and investigate why it is important for living systems.
Consider the following essential questions as you complete Lesson 5 :
- What are the compounds necessary for life processes on Earth ?
- How are these compounds replenished ?
- What is a cycle ?
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Vocabulary
Below is the link to the Science 20 glossary. Make sure you can define the terms associated with this lesson from the glossary
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Read
Read pages 440 - 452 in the Science 20 textbook
Self Check
Try the knowledge questions on page 452 of your Science 20 text book to check your comprehension.
Watch and Listen
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Reflect and Connect
Of the cycles that you learned about in this lesson, which one do you think is the most sensitive to disruption. Explain your answer and post it to the discussion forum.
Module 9 : Lesson 5 Assignment.
Once you have completed all of the learning activities for the lesson, you can complete the online assignment.
Lesson Summary
In this lesson you learned about the various matter cycles.
Lesson 6 will look at biodiversity.