AnswersPBCSD_Grade_Forgiveness_2001340_Environmental_Science_S1_2020Cumulative Exam

Cumulative Exam — Cumulative exam Answers

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21
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Which of the following does not occupy the bottom of an energy pyramid?

A
phytoplankton
B
trees
C
grass
D
zooplankton
22
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National parks reduce the human impact on land by _______.

A
permitting limited human development.
B
cleaning up litter
C
preventing human development
D
preventing companies from polluting on public lands
23

Why is phytoplankton located near the ocean’s surface?

A
It cannot live in areas of high salinity.
B
It can more easily evade predators on the oceans’s surface.
C
It needs access to oxygen only found at the ocean’s surface.
D
It needs sunlight to survive.
24

Leafy sea dragons use their leaf-like projections to help them find food.

A
T
B
F
25

Fossil fuels are an important natural resource used by society. Which of the following best describes fossil fuels?

A
They are any liquid fuel derived from once-living matter.
B
They are organic fuels derived from ancient plants and animals.
C
They are fuels in which dinosaur fossils are commonly found.
D
They are naturally occurring inorganic fuels like coal and petroleum.
26

Competitive exclusion controls population size.

A
T
B
F
27

Which of the following does not occupy the bottom of an energy pyramid?

A
phytoplankton
B
trees
C
grass
D
zooplankton
28

The use of biotechnology in agriculture is generally more harmful than beneficial.

A
T
B
F
29

A fish living in an environment cold enough to freeze the water in its body is not an extremophile.

A
T
B
F
30

Which of the following is a way that scientific advancements have benefited society?

A
increased energy efficiency
B
increased resource use
C
increased urbanization
D
changes in the global climate
31

Exposure to pesticides or industrial chemicals _______.

A
always has immediate and apparent side effects
B
decreases the risk of developing genetically influenced diseases
C
increases the risk of developing genetically influenced diseases
D
has no effect on the risk of contracting genetically influenced diseases
32

Why has the spread of the herbicide-resistant hydrilla through Florida’s waterways resulted in them no longer being navigable by most boats?

A
Thy hydrilla has induced a drought that drained the waterways.
B
The weed clogs propellers that boats use for propulsion.
C
The sticky leaves of the weed hold boats in place.
D
All of the above
33

Which of the following species is an R-selected species?

A
Giant tortoises
B
Mosquitoes
C
Elephants
D
Redwoods
34

Which of the following statements about biodiversity is not true?

A
Changes to biodiversity never occur naturally.
B
Changes to biodiversity can lead to a decrease in ecosystem stability.
C
Changes to biodiversity can positively and negatively affect on an ecosystem.
D
Changes to biodiversity can lead to an increase in ecosystem stability.
35

What system includes oxygen, nitrogen, and ozone?

A
geosphere
B
hydrosphere
C
atmosphere
D
biosphere
36

Which of the following statements about environmental risks to human health is true?

A
Environmental health risks are associated only with synthetic compounds.
B
Environmental health risks come from natural sources only.
C
Environmental health risks are associated solely with human activity.
D
None of the above
37

Which of the following is a major property of ocean water?

A
salinity
B
pressure
C
mineral content
D
plankton content
38

Which of the following is not an example of a scientific model?

A
a diagram of a cell
B
a data table
C
a three-dimensional representation of an atom
D
a graph showing the change in temperature and volume over time for hydrogen gas
39

Which of the following factors will not affect a balanced physiology?

A
elevation
B
precipitation type
C
humidity
D
sun exposure
40

Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming?

A
Pollution began reflecting sunlight and heat rather than absorbing it.
B
Evidence of global warming became overwhelming.
C
Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
D
Congress required scientists to assign a cause to global climate change.

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