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EXCHANGE MIDTERM EXAM QUESTIONS AND
ANSWERS 2025
A species that is at serious risk
of extinction is called a(n)
a. threatened species.
b. invasive species.
c. endangered species.
d. extirpated species. - .....ANSWER ...✔✔ c.
endangered species
By far, the biggest cause of
biodiversity loss today is
a. climate change.
b. over harvesting.
c. habitat change and fragmentation.
d. pollution - .....ANSWER ...✔✔ c. habitat change
and fragmentation
In a mass extinction, the rate of
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extinction exceeds
a. 99%.
b. 85%.
c. the rate of environmental change.
d. the rate of background extinction. - .....ANSWER
...✔✔ d. the rate of background extinction
In the United States, what is the
major law that protects biodiversity?
a. Convention on Biological Diversity
b. Endangered Species Act
c. U.S. Fish and Wildlife Service
d. Species Survival Plan - .....ANSWER ...✔✔ b.
Endangered Species Act
There is a plan to establish an
8000-kilometer-long strip of land
across eight southeast Asian countries
to rejoin fragments of tiger habitat.
This is an example of a
a. wildlife corridor.
b. worldwide biodiversity treaty.
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c. captive breeding program.
d. conservation concession. - .....ANSWER ...✔✔ a.
wildlife corridor
High levels of biodiversity tend to
a. have little or no effect on ecosystems.
b. decrease an ecosystem's resistance.
c. make an ecosystem less resilient.
d. increase the stability of an ecosystem. - .....ANSWER
...✔✔ d. increase the stability of an ecosystem
When the environment changes
too quickly for an organism to adapt,
what will occur?
a. evolution
b. speciation
c. genetic drift
d. extinction - .....ANSWER ...✔✔ d. extinction
In the history of the world,
how many mass extinctions
have occurred?
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a. 5
b. 7
c. 10
d. 13 - .....ANSWER ...✔✔ a. 5
Relieving a nation from repaying some of the money it
owes other nations in exchange for protecting its
biodiversity is called a
a. debt-for-nature swap.
b. conservation concession.
c. Species Survival Plan.
d. wildlife corridor. - .....ANSWER ...✔✔ a. debt-for-
nature swap
The Sikhote-Alin Mountains, and the Siberian tigers living
on them, are separated from other mountain regions in
which the tigers could live. The mountains are an
example of a(n)
a. mass extirpation.
b. invasive species.
c. mass extinction.
d. habitat fragment. - .....ANSWER ...✔✔ ...
EXCHANGE MIDTERM EXAM QUESTIONS AND
ANSWERS 2025
A species that is at serious risk
of extinction is called a(n)
a. threatened species.
b. invasive species.
c. endangered species.
d. extirpated species. - .....ANSWER ...✔✔ c.
endangered species
By far, the biggest cause of
biodiversity loss today is
a. climate change.
b. over harvesting.
c. habitat change and fragmentation.
d. pollution - .....ANSWER ...✔✔ c. habitat change
and fragmentation
In a mass extinction, the rate of
,2|Page
extinction exceeds
a. 99%.
b. 85%.
c. the rate of environmental change.
d. the rate of background extinction. - .....ANSWER
...✔✔ d. the rate of background extinction
In the United States, what is the
major law that protects biodiversity?
a. Convention on Biological Diversity
b. Endangered Species Act
c. U.S. Fish and Wildlife Service
d. Species Survival Plan - .....ANSWER ...✔✔ b.
Endangered Species Act
There is a plan to establish an
8000-kilometer-long strip of land
across eight southeast Asian countries
to rejoin fragments of tiger habitat.
This is an example of a
a. wildlife corridor.
b. worldwide biodiversity treaty.
,3|Page
c. captive breeding program.
d. conservation concession. - .....ANSWER ...✔✔ a.
wildlife corridor
High levels of biodiversity tend to
a. have little or no effect on ecosystems.
b. decrease an ecosystem's resistance.
c. make an ecosystem less resilient.
d. increase the stability of an ecosystem. - .....ANSWER
...✔✔ d. increase the stability of an ecosystem
When the environment changes
too quickly for an organism to adapt,
what will occur?
a. evolution
b. speciation
c. genetic drift
d. extinction - .....ANSWER ...✔✔ d. extinction
In the history of the world,
how many mass extinctions
have occurred?
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a. 5
b. 7
c. 10
d. 13 - .....ANSWER ...✔✔ a. 5
Relieving a nation from repaying some of the money it
owes other nations in exchange for protecting its
biodiversity is called a
a. debt-for-nature swap.
b. conservation concession.
c. Species Survival Plan.
d. wildlife corridor. - .....ANSWER ...✔✔ a. debt-for-
nature swap
The Sikhote-Alin Mountains, and the Siberian tigers living
on them, are separated from other mountain regions in
which the tigers could live. The mountains are an
example of a(n)
a. mass extirpation.
b. invasive species.
c. mass extinction.
d. habitat fragment. - .....ANSWER ...✔✔ ...
