AnswersCR03051B BiologyUnit Test

Human Impact on Resources Answers

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1
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eutrophicationhabitat destructionnonnative species introductiondeforestation

A
eutrophication
B
habitat destruction
C
nonnative species introduction
D
deforestation
2
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Which of the following are effects of environmental change on an entire species?

A
individual deaths and impacts on growth and development
B
impacts on growth and development and losses of habitats
C
species competition and individual deaths
D
extinction and change in species competition
3

Which statements describe a human-created mass extinction? Select three correct choices.It results from the disappearance of entire species in a short time.It results from the disappearance of a few organisms in a short time.It is caused by the growth of the human population.It is a type of long-term change.It is a type of short-term change.It is caused by a decrease in the introduction of nonnative species.

A
It results from the disappearance of entire species in a short time.
B
It results from the disappearance of a few organisms in a short time.
C
It is caused by the growth of the human population.
D
It is a type of long-term change.
E
It is a type of short-term change.
F
It is caused by a decrease in the introduction of nonnative species.
4

Which of the following are examples of short-term, human-induced environmental changes? Select three answer choices. mass extinctionglobal warmingdeforestationozone layer destructionpollution

A
mass extinction
B
global warming
C
deforestation
D
ozone layer destruction
E
pollution
5

Which chemicals are major contributors to ozone layer destruction? Select two answer choices.phosphorusnitrogenbrominechlorinecarbon dioxidemethane

A
phosphorus
B
nitrogen
C
bromine
D
chlorine
E
carbon dioxide
F
methane
6

Human-induced environmental changes can affect living things at which level(s)?

A
organisms only
B
organisms and populations only
C
species only
D
organisms, populations, and species
7

Ariel drew a diagram to compare two human-induced environmental changes.

Question illustration
A
Introduces substances into an environment
B
Involves the overhunting of resources
C
Causes organisms to use up resources
D
Results from the building of roads and bridges
8

Which of the following shows the order of events that scientists believe will likely lead to the disappearance of many species?

A
increase in human population, increase in short-term human-induced changes, ozone layer destruction
B
increase in short-term human-induced changes, increase in human population, ozone layer destruction
C
increase in human population, increase in short-term human-induced changes, mass extinction
D
increase in short-term human-induced changes, increase in human population, mass extinction
9

Which statements describe global warming? Select two answer choices.Global warming can be decreased through deforestation.Global warming occurs naturally.Global warming results from the buildup of nutrients in runoff.Global warming is likely increased by humans.Global warming is enhanced by nonnative species.

A
Global warming can be decreased through deforestation.
B
Global warming occurs naturally.
C
Global warming results from the buildup of nutrients in runoff.
D
Global warming is likely increased by humans.
E
Global warming is enhanced by nonnative species.
10

Which situation is an example of nonnative species introduction?

A
A huge volcanic eruption in Washington destroyed many habitats.
B
A large oil spill in the Gulf of Mexico killed many organisms that lived there.
C
Horseshoe crabs in the waters of Virginia have been overfished, and their numbers have declined.
D
Water hyacinths from Asia now grow in the United States and are crowding out animals and other plants.
11

Leon made a study chart about human-induced changes to the environment. Environmental Changes Caused by HumansXYResults from introducing harmful substances into the environmentExample: oil spillResults from natural areas being cleared and replaced by human developmentExample: deforestation

A
X: Habitat DestructionY: Pollution
B
X: Long-Term ChangesY: Short-Term Changes
C
X: Short-Term ChangesY: Long-Term Changes
D
X: PollutionY: Habitat Destruction
12

Which of the following are effects of environmental change on populations?

A
speciation and a decrease in resources
B
loss of habitat and impacts on growth and development
C
a decrease in resources and loss of habitat
D
speciation and extinction
13

Which of these organisms have been negatively affected at the species level due to human-induced environmental changes?

A
zebra mussels and kudzu
B
kudzu and dodo birds
C
zebra mussels and Caribbean monk seals
D
Caribbean monk seals and dodo birds
14

Which situation is an example of a human-induced environmental change affecting a population?

A
Blue jays no longer live in a forest because the trees in the forest were cut down.
B
A volcanic eruption killed grasses that were growing within a few miles of the volcano.
C
Floods from a storm forced many white-tailed deer to move to a new habitat.
D
A fisher caught a few different species of fish that live in an ocean habitat.

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