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Choose and define one of the following three air pollution problems: global warming, thinning of the atmospheric ozone layer, and acid precipitation. Describe its underlying causes, potential health effects, and key prevention strategies. Include at least three practical steps for prevention that individuals can take.

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In 2018, what percentage of crustaceans are threatened?


A) 7
B) 27
C) 47
D) 67

E) A) and C)
F) A) and B)

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Eating large amounts of which of the following foods can expose you to high levels of mercury?


A) beef
B) pork
C) chicken
D) fish

E) A) and C)
F) A) and B)

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High fertility rates in developing countries are associated with poverty and high child mortality.

A) True
B) False

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___________ is currently the biggest energy consumer in the world.


A) Russia
B) India
C) United States
D) China

E) A) and D)
F) A) and C)

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Fluoridation is a water-treatment process designed to disinfect water.

A) True
B) False

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Which one of the following statements is FALSE about the effects of noise?


A) Permanent hearing loss can occur from prolonged exposure to sounds above 80-85 decibels.
B) Children may suffer damage to their hearing at noise levels lower than when adults would suffer damage.
C) Permanent hearing loss occurs within the first 2 hours of exposure to sounds above 60 decibels.
D) Federal, provincial, and territorial governments set legal standards for noise levels in the workplace.

E) A) and B)
F) All of the above

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Which of the following statements is TRUE regarding energy use and pollution?


A) Energy consumption has little to do with environmental problems such as air pollution.
B) Nuclear power creates energy without producing pollution.
C) The mining of coal causes pollution on land and is a serious health problem.
D) Oil is one of the cleanest sources of energy available in Canada.

E) All of the above
F) B) and C)

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Hearing damage can occur after one minute of exposure to sounds louder than:


A) 80 decibels.
B) 90 decibels.
C) 100 decibels.
D) 110 decibels.

E) B) and C)
F) A) and D)

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Rodents that carry disease-causing microorganisms are referred to as


A) sectors.
B) vectors.
C) carriers.
D) transporters.

E) A) and D)
F) B) and C)

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Hearing damage can occur after eight hours exposure to sounds louder than:


A) 60 decibels.
B) 70 decibels.
C) 80 decibels.
D) 90 decibels.

E) B) and D)
F) B) and C)

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When toxic or potentially toxic substances build up in the food chain, the process is called


A) vector transmission.
B) biomagnification.
C) bioloading.
D) radiation sickness.

E) B) and C)
F) None of the above

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Ozone levels have declined by what percentage since 1980?


A) 5%
B) 10%
C) 20%
D) 30%

E) C) and D)
F) B) and D)

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Pollen is a contributor to air pollution.

A) True
B) False

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The proportion of people age 60 and over will rise to _____ billion in 2050.


A) 1.1
B) 1.6
C) 2.1
D) 2.6

E) A) and B)
F) A) and C)

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If the greenhouse effect does raise temperatures worldwide, it is predicted that all the following will happen, EXCEPT


A) change in location of vegetation zones.
B) increased mortality from heat stress.
C) change in weather and ocean patterns.
D) distortion of the earth's orbital path.

E) None of the above
F) A) and B)

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According to the World Health Organization, __________ people do not have access to safe drinking water.


A) 1.1 million
B) 2.1 million
C) 3.1 billion
D) 4.1 billion

E) B) and C)
F) None of the above

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Worldwide, about _____ percent of the waste generated from healthcare activities is non-hazardous.


A) 15
B) 40
C) 65
D) 85

E) All of the above
F) None of the above

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Particulate matter is released into the atmosphere by all the following, EXCEPT


A) household furnaces.
B) industrial processes.
C) dust from roadways.
D) combustion of fossil fuels.

E) A) and C)
F) B) and C)

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Which of the following is NOT a source of greenhouse gas emissions?


A) methane
B) carbon monoxide
C) nitrous oxide
D) ozone

E) A) and D)
F) All of the above

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