AnswersFA Vandergrift Environmental Science 2026-27A History of Global Climate Change

A History of Global Climate Change — Cumulative exam Answers

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21
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Which of the following statements about Earth’s cycles is not true?

A
Earth’s cycles move matter between abiotic and biotic factors of the environment.
B
The various cycles found on Earth are vital to life.
C
Some of Earth’s cycles are a direct result of human action.
D
Earth’s cycles convert nonliving elements into forms usable by organisms.
22
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Which of the following statements about biodiversity is true?

A
Changes to biodiversity always positively affect an ecosystem.
B
Changes to biodiversity always negatively affect an ecosystem.
C
Changes to biodiversity can positively and negatively affect an ecosystem.
D
Changes to biodiversity never affect an ecosystem.
23

Which of the following is not true regarding the cacao tree?

A
It originated in the Amazon.
B
The cacao tree produces fruit all year long.
C
Cocoa is made from the whole cacao fruit.
D
The cacao fruit has a mango flavor.
24

How is the world population projected to change in the next few decades?

A
It is projected to level off.
B
It is projected to decrease steadily.
C
It is projected to increase steadily.
D
It is projected to double within 5 years.
25

Which of the following is not a manmade cause of global warming?

A
burning fossil fuels
B
deforestation
C
respiration
D
population growth
26

R-selected species have a short life span and an early reproduction cycle.

A
T
B
F
27

Which of the following is true about ice ages?

A
forests are plentiful and common
B
biodiversity is reduced
C
ecosystems are created
D
glaciers recede
28

Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms?

A
Storm surges cause massive damage to buildings along coastlines.
B
Hurricanes often flood coastal communities.
C
Hurricane strength winds cause large amounts of property damage.
D
Erosion caused by hurricanes can leave coasts more exposed to storms.
29

Which of the following aspects of society is the least affected by limiting factors?

A
location
B
health
C
behavior
D
stability
30

Small aquatic organisms, such as coral, are the producers of the ocean.

A
T
B
F
31

Which of the following scenarios represents change to an ecosystem brought about by biotic factors?

A
a wildfire caused by lightning striking a tree
B
a flood caused by a severe storm
C
a landslide caused by cattle overgrazing
D
a volcano
32

Which of the following factors renders a species more susceptible to disease and infertility?

A
large genetic diversity
B
inbreeding
C
crossbreeding
D
recessive traits
33

Which of the following is true of deciduous forests?

A
characterized by four seasons
B
trees maintain their leaves year round
C
precipitation is concentrated in one season
D
averages 5-10 inches of precipitation annually
34

Fluctuations in the phosphorus cycle in aquatic ecosystems _______.

A
can lead to changes in the growth rates of aquatic populations
B
are never caused by human impact on the environment
C
lead to a decrease in the amount of phosphorus found in sediment
D
never occur naturally
35

Wind, solar and geothermal power are called renewable energy sources because _______.

A
tax breaks for these sources are renewed every year
B
they are continuously replenished
C
humans can replenish these sources periodically
D
they produce few toxic byproducts
36

The disproportionately high appearance of polydactylism among the Amish suggests that _______.

A
it is a common mutation
B
it is a common birth defect in Pennsylvania
C
it was overrepresented in the gene pool of the original Amish settlers
D
humans are prone to this birth defect
37

Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?

Question illustration
A
1.3 bison/mi
B
16 bison/mi
C
77 bison/mi
D
0.77 bison/mi
38

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

A
They are destructive to native species and have no natural predators.
B
They reproduce more quickly than native species.
C
They have venom glands.
D
Large adult specimens are able to hunt snakes.
39

Coniferous forests evolved due to Earth’s continents assuming their modern configuration.

A
T
B
F
40

Which of the following about the ozone layer is not true?

A
The ozone layer is formed in the stratosphere.
B
The ozone layer helps sustain life by absorbing a large amount of incoming UV radiation.
C
Ozone in the troposphere is beneficial to living organisms.
D
Depletion of the ozone layer can lead to an increase in skin cancer.

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