Biodiversity Answers

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1
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A scientist is studying the biodiversity of an ecosystem that has a cool climate. The scientist counts the number and types of organisms in a 5 foot by 5 foot area. She finds that the ecosystem has very low biodiversity. Another scientist studies the same ecosystem. He counts the number and types of organisms in a 1,000 foot by 1,000 foot area and finds that the ecosystem has high biodiversity.

A
The scientist who found high biodiversity observed fewer niches.
B
The scientist who found high biodiversity observed more plants than animals.
C
The scientist who found low biodiversity studied the ecosystem on cold days.
D
The scientist who found low biodiversity studied too small of an area.
2
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Which is a disadvantage of captive breeding?

A
rarely successful
B
harmful to many animals
C
usually results in overpopulation
D
often expensive
3

Meg researched the biodiversity in four water ecosystems.W - low niche diversity and warm water temperatures X - low niche diversity and cold water temperatures Y - high niche diversity and cold water temperatures Z - high niche diversity and warm water temperatures

A
W
B
X
C
Y
D
Z
4

Several years ago, fish from Asia were introduced into ponds in the United States. They have rapidly grown in numbers and use up a lot of the food and habitats of other fish that are natural to the United States.

A
pollution
B
nonnative species
C
habitat destruction
D
poaching
5

a lawhabitat preservationa nonnative speciescaptive breeding

A
a law
B
habitat preservation
C
a nonnative species
D
captive breeding
6

Although it is against the law, people hunt and capture mountain gorillas in Africa. They sell the baby gorillas for large sums of money.

A
pollution
B
nonnative species
C
habitat destruction
D
poaching
7

The chart shows information about four ecosystems. Ecosystem Data EcosystemAverage Year-Round Temperature (°F)Niche DiversitySize (square miles)W35medium140X74high100Y46high75Z87low60

A
W
B
X
C
Y
D
Z
8

Which are examples of habitat destruction? Check all that apply.poachingdeforestationcaptive breedingwildfirespollution

A
poaching
B
deforestation
C
captive breeding
D
wildfires
E
pollution
9

Which best compares habitat preservation and laws that protect biodiversity?

A
Habitat preservation usually protects only individual species, while laws protect entire ecosystems.
B
Laws usually protect only certain species, while habitat preservation protects entire ecosystems.
C
Only habitat preservation has been shown to actually help protect biodiversity.
D
Only laws have been shown to actually help protect biodiversity.
10

In what ways have members of the gray whale species been affected by efforts to protect biodiversity? Check all that apply.They are currently endangered and almost extinct.Their numbers have increased because of the Endangered Species Act.Their numbers have increased mostly due to captive breeding.They are still being hunted, and their numbers are declining.They are an example of protecting biodiversity through the passage of laws.

A
They are currently endangered and almost extinct.
B
Their numbers have increased because of the Endangered Species Act.
C
Their numbers have increased mostly due to captive breeding.
D
They are still being hunted, and their numbers are declining.
E
They are an example of protecting biodiversity through the passage of laws.

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