Which of the following is true about Earth's supplies of freshwater?
a.
Most liquid freshwater is stored in rivers and lakes.
b.
Groundwater is a significant reservoir of liquid freshwater.
c.
Liquid freshwater is about half of all the water on Earth.
d.
None of the above.
Please select the best answer from the choices provided
question
Not only is water necessary for the physical survival of humans, but many, if not most, human activities also make use of it. Agriculture is critically dependent upon continual supplies of freshwater. Human households also use freshwater daily for cleaning and laundry as well as for transporting sewage to waste treatment plants.
answer
Explain why water is critically important to most facets of human life.
question
C
answer
Which of the following is not a risk factor for water intoxication?
a.
a low body mass
b.
heat stress
c.
resting
d.
overexertion
Please select the best answer from the choices provided
question
Around the world the most significant restriction on access to potable water is money. While access to raw water sources, clean or otherwise, is important, the purification process itself is expensive. Once water has been rendered potable, it is important that it be delivered without reintroducing contamination. The most convenient way to deliver potable water is through underground pipes, which requires expensive infrastructure.
answer
Describe the most significant restriction on access to potable water around the world.
question
D
answer
Which of the following activities depend upon the availability of supplies of freshwater?
a.
agriculture
b.
bathing
c.
drinking
d.
all of the above
Please select the best answer from the choices provided
question
C
answer
Which of the following would be expected to have plentiful access to potable water?
a.
Africa
b.
China
c.
Europe
d.
South America
Please select the best answer from the choices provided
question
The defining characteristic of potable water is that it can be consumed without risk of harm. Potable water is of a sufficiently high quality and purity that it lacks pathogens or contaminants that might otherwise pose a hazard to humans.
answer
Identify what constitutes the defining characteristic of potable water.
question
A
answer
The most common source of water contamination is _______.
a.
sewage
b.
pesticides
c.
fertilizers
d.
none of the above
Please select the best answer from the choices provided
question
The amount of water needed to sustain a person is highly variable because it depends upon not only the temperature and humidity of the environment where they live but the level of physical activity they engage in as well. People engaging in low levels of activity in cool temperate climates will need less water to survive than people engaged in highly strenuous activity in hot, dry climates.
answer
Explain why the amount of water a person needs to survive can be highly variable.
question
As human populations grow they consume more water, not just by drinking, but through all of the other human activities that require freshwater such as agriculture, bathing, cleaning, etc. Overpopulation, therefore, can lead to overconsumption as populations use more water than an area can support and replenish sustainably.
answer
Explain the relationship between overpopulation and diminishing water supplies.
question
T
answer
In developed nations, the water delivered to homes by pipe is generally potable.
Please select the best answer from the choices provided
question
C
answer
The defining characteristic of potable water is that it _______.
a.
is used as tap water
b.
can be used for washing and irrigation
c.
can be used and consumed without risk
d.
is delivered through pipes
Please select the best answer from the choices provided
question
B
answer
Which of the following is not an option for solving the world water crisis?
a.
desalination
b.
finding new sources of freshwater
c.
reducing overconsumption
d.
wastewater treatment plants
Please select the best answer from the choices provided
question
D
answer
Which of the following human activities do not require water?
a.
agriculture
b.
household chores
c.
industry
d.
none of the above
Please select the best answer from the choices provided
question
T
answer
The amount of water a body requires for survival is dependent upon the climate and the individual's level of physical activity.
Please select the best answer from the choices provided
question
B
answer
Which of the following most significantly determines a communities' access to potable water?
a.
access to clean raw water sources
b.
the availability of money
c.
local drought conditions
d.
the level of industrial development
Please select the best answer from the choices provided
question
B
answer
Lakes and rivers constitute _______.
a.
87% of freshwater
b.
a tiny fraction of Earth's freshwater
c.
a majority of Earth's freshwater
d.
a majority of water on earth
Please select the best answer from the choices provided
question
T
answer
The principle reason that most of North America and Europe do not have difficulties with access to potable water is their wealth.
Please select the best answer from the choices provided
question
D
answer
Which of the following is a consequence of water polluted by human sewage?
a.
pathogens
b.
disease vectors
c.
high levels of contaminants
d.
all of the above
Please select the best answer from the choices provided
question
B
answer
Which of the following is least likely to have difficulties with economic access to potable water?
a.
Zimbabwe
b.
Australia
c.
India
d.
None of the above
Please select the best answer from the choices provided
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