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Endangered And Extinct Species
Test Description: Review of endangered and extinct species.
Instructions: Answer all questions to get your test result.
1) What is an endangered species?
A
a species that has become domesticated
B
a species that is included in catch and release programs
C
a species that is at risk of becoming extinct
D
a species that is very aggressive
2) When the number of individuals in a species becomes so small that the species may not survive, the species is:
A
threatened
B
troubled
C
extinct
D
endangered
3) Extinction of species is:
A
unheard of today
B
predetermined
C
rare
D
common
4) The term applied to a species that can no longer be found living is
A
extinct
B
troubled
C
endangered
D
threatened
5) An ecologically healthy area has:
A
many species with very few individuals of each species
B
many species with a sustainable number of individuals of each species
C
a few species with a sustainable number of individuals of each species
D
a few species with very few individuals of each species
6) If none of the individuals within a particular species can survive to reproduce, what will happen to that species?
A
they will become extinct
B
they will adapt to a new environment
C
they will evolve into a new species
D
they will increase in number
7) Explain the relationship between extinction and biodiversity.
A
Extinction has no impact on biodiversity.
B
Extinction randomly changes biodiversity in one direction or the other.
C
Extinction contributes to an increase in biodiversity.
D
Extinction contributes to a decrease in biodiversity.
8) When the number of individuals in a species becomes so small that the species may not survive, the species is
A
threatened
B
troubled
C
extinct
D
endangered
9) Extinction is a natural process that has occurred throughout the history of life on Earth. In the 21st century, extinction is a big problem because:
A
now we can record when it happens
B
there are fewer species that could become extinct than ever before
C
the rate of extinction is much faster than ever before
D
the rate of extinction is much slower than ever before
10) About half of Earth's biodiversity exists in its tropical rain forests. This means that tropical rain forests have
A
more plants than animals
B
the greatest number of animals of any climate region
C
more animals than plants
D
the greatest number of different species of any climate region
*select an answer for all questions
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