1

Introduction to Ecosystems

Biotic and abiotic factors

2

Food Chains and Food Webs

Energy flow through ecosystems

3

Ecological Pyramids

Numbers, biomass, and energy

4

Population Dynamics

Growth curves and limiting factors

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5

Interactions Between Organisms

Competition, predation, and symbiosis

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Q

Checkpoint Quiz 1

Test your knowledge of Lessons 1-5

6

Cycles in Nature

Carbon, water, and nitrogen cycles

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7

Succession

How ecosystems change over time

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8

Human Impact on Ecosystems

Pollution, climate change, and conservation

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