AnswersPBCSD_Grade_Forgiveness_2001340_Environmental_Science_S1_2020Cumulative Exam

Cumulative Exam — Cumulative exam Answers

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21
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Polio is a disease that can cause paralysis. Doctors treated patients with casts and braces, but the work of Elizabeth Kenny led to the use of hot baths and exercise to treat polio victims. These patients had less incidence of paralysis. Kenny’s ideas and their acceptance were due to

A
skepticism.
B
popular opinion.
C
open-mindedness.
D
scientific consensus.
22
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The overall population of a species decreased. What could have occurred to make this happen?

A
The immigration rate increased, while the death rate decreased.
B
The birth rate decreased, while the death rate increased.
C
The carrying capacity increased, while the immigration increased.
D
The emigration increased, while the birth rate increased.
23

Which source would be the most reliable to validate a claim?

A
a newspaper
B
a journal
C
a magazine
D
the Internet
24

Which of the following scenarios is representative of how agricultural practices can affect the environment?

A
increased oxygen levels in a pond due to fertilizer runoff
B
sediment accumulation in a body of water near a farm
C
soil compaction caused by tillage
D
increased plant growth caused by the application of herbicides
25

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations does not help an animal move through the water?

A
streamlined body
B
thick layer of blubber
C
flippers and flattened tails
D
smooth, almost furless body
26

Why is it important for an individual to assess environmental factors for health risks?

A
Both indoor and outdoor environments can pose potential risks for an individual’s health.
B
While indoor environments are safe, outdoor environments can potentially harm an individual’s health.
C
Indoor environmental risks can only lead to lung issues, while outdoor environmental risks lead mainly to behavioral problems.
D
Environmental risk factors are important when an individual is considering outdoor exercise, but not during everyday activity.
27

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.
28

Which is an example of a way in which science has improved a societal problem?

A
contaminated water being purified
B
pathogens becoming resistant to antibiotics
C
bacteria contaminating food
D
unknown diseases appearing in some areas
29

Which of the following best explains why buildings tip during earthquakes?

A
Seismic waves damage buildings’ foundations.
B
The liquefaction of solid soil undermines buildings’ foundations.
C
Body waves break underground water pipes.
D
Surface faulting moves the ground in different directions.
30

A biologist counts the number of zebras in a population each year, and notices an increase in the zebra population. Which describes the biologist’s actions?

A
graphing
B
inference
C
observation
D
interacting
31

Why is water considered to be abiotic?

A
because it is not part of the biosphere
B
because it came from something living
C
because it is dead
D
because it is not living and never lived
32

Which statement correctly describes the electrons in a water molecule?

A
Electrons are pulled closer to the hydrogen atoms.
B
Electrons are pulled closer to the oxygen atom.
C
Electrons are located inside the nucleus of the hydrogen atoms.
D
Electrons are located inside the nucleus of the oxygen atoms.

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