Page 43 - Science Course 3 (Book 1)

Mo1-L4: Key Concept Organizer

Direction: Answer each question or respond to each statement in the space provided.

Primary Succession

1. Draw an area of molten lava that has flowed 2. What creates the ground after the lava cools
over the ground and cooled. and hardens?

3. Draw the same area showing the first 4. What are the specific pioneer species in your
organisms that live there. drawing, and how did they get to the area?
How do these species change the area?

5. Draw the same area showing more organisms 6. Which organisms did you draw, and how did
living there. they get there? How does the soil change?

7. Draw the same area after many years. 8. Describe the ecosystem in your drawing.

Mo1-L4: Key Concept Check

Direction: Complete the Venn diagram below by writing features of primary succession on the left and
secondary succession on the right. Write what they have in common in the center.

1. Primary Succession 2. Both 3.Secondary Succession

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