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Succession and Extinction Answers

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5

Why does secondary succession occur faster than primary succession?

Answer:

Secondary succession occurs faster because nutrient-rich soil is already present, and seeds from earlier occupants may remain, arrive by wind, or germinate after a fire. Primary succession must first form soil, making it slower.

6

Name three ecosystem services provided by biodiversity.

Answer:

Three ecosystem services provided by biodiversity include the protection of water resources, soil formation and protection, and nutrient storage and recycling. Other services include pollution breakdown and absorption, climate stability, and recovery from unpredictable events.

7

Name three biological services provided by biodiversity.

Answer:

Food, medicine, and wood products.

8

Which of the following did you include in your response? Check all that apply.

A
Soil with nutrients is already present.
B
Seeds are present from earlier occupants, brought in by wind, and/or germinate after fire.
9

Which of the following did you include in your response? Check all that apply.

A
protection of water resources
B
soil formation and protection
C
nutrient storage and recycling
D
pollution breakdown and absorption
E
climate stability
F
ecosystem maintenance
G
recovery from unpredictable events
10

Which of the following did you include in your response? Check all that apply.

A
food
B
medicine
C
wood products
D
ornamental plants
E
breeding stocks
F
future resources
G
genetic diversity

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