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Lesson 8 Ecosystems

Self Study Test


I. Introduction

A. Energy

B. Matter (nutrients)


II. The energy flow

A. Direction of energy flow

1. Photosynthesis

2. Respiration

B. Energy flow through trophic (feeding) levels

1. Producers

2. Primary consumers

3. Secondary consumers

4. Tertiary consumers

5. Factors that affect the structure

C. Productivity of an ecosystem


III. Matter cycles

A. Carbon cycle

B. Nitrogen cycle

C. Phosphorus cycle


IV. Hydrological cycle


V. Conclusions

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