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Ecology Ch 9
Test Description: Species Approach to Saving Diversity
Instructions: Answer all questions to get your test result.
1) The current mass extinction differs from previous mass extinctions in that
A
It is taking place at a slower rate.
B
The current extinction is caused by humans.
C
Genetic engineering will make recovery easier.
D
It is making the planet healthier.
2) Three of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. One of the following is not such a characteristi
A
narrow distribution
B
low reproductive rates
C
feeds at high trophic level
D
small territories
3) Ecotourism generates between $1 million and $2 million per minute in tourist expenditures worldwide. This value is a type of which of the following?
A
aestetic value
B
use value
C
ecological value
D
intrinsic value
4) According to researchers, the greatest threat to wild species is
A
pollution
B
population and resource use growth
C
invasive species
D
habitat destruction
5) When a large, contiguous area of habitat is reduced in area and divided into smaller, more scattered patches, the process is called
A
resource partitioning
B
resource loss
C
habitat fragmentation
D
habitat exploitation
6) Which of the following is not an ecological service provided by birds?
A
nitrogen fixation
B
seed dispersal
C
control insect population numbers
D
pollination
7) With the Arctic warming twice as fast as the rest of the world, which of the following organisms is rapidly moving toward threatened status?
A
polar bears
B
artic fox
C
sea lion
D
walrus
8) The greatest new threat to bird populations is
A
pollution
B
climate change
C
pet trade
D
over hunting
9) Which of the following is not a characteristic of a successful invader species?
A
high dispersal rate
B
long lived
C
high reproductive rate with short generation time
D
specialist
10) Some toxic chemicals, such as those in DDT, can be stored in the fat tissue of animals. As these animals become food for larger and larger animals, the amount of the toxin gets
A
biotechnology
B
biophilia
C
biosphere
D
biomagnification
*select an answer for all questions
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