Chapter 4,6,7

Question 1

Natural selection acting on spontaneous mutations results in evolution

Answer 1

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Question 2

Natural diversity develops as species allocate resources

Answer 2

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Question 3

All species have environmental tolerance limits some narrower than others

Answer 3

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Question 4

Taxonomy describes relationships between species

Answer 4

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Question 5

All complex organisms have evolutionary relationships with other species

Answer 5

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Question 6

Predation is an important type of selective pressure

Answer 6

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Question 7

Symbiosis involves long term biological interactions that benefit one or both species

Answer 7

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Question 8

Keystone species serve a fundamentally critical role in an ecosystem

Answer 8

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Question 9

Community structure and function depend on species diversity, abundance, and distribution.

Answer 9

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Question 10

Complexity and connectedness describe the extent of species interrelationships.

Answer 10

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Question 11

Biological communities provide ecosystem services.

Answer 11

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Question 12

The adaptive cycle explains disturbance and change in a complex system.

Answer 12

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Question 13

Large, abrupt, nonlinear change results in a fundamental restructuring of the biological community.

Answer 13

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Question 14

The risk of ecological systems tipping into undesirable states is significant for people and their well-being.

Answer 14

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