Bisc 102
if a population of 1,000 had on average footprint of 2 global hectares per person. How many global hectares would a population of 2,000 have?
1
The world's demand exceeds the Earth's ability to meet that demand by
10%
Although cities occupy ___ of earth's surface and have only ___ of the world's population, they consume more than ____ of earth's natural resources
2%; 50%; 75%
What percentage of earth's water is freshwater?
2.5%
as of 2006, the global hectare average was ___ per person per year
2.6
Recent calculations put the global footprint per capita at _____ and earth's biocapacity at ___ global hectares
2.6%; 1.8%
In the US, energy demands account for roughly ____ of the US ecological footprint
50%
The current population of earth is roughly
7 billion
Although ____ of earth's surface is water, only ____ is available for human consumption
70%; 1%
What percentage of Earth's freshwater is used for agriculture?
>90%
Where is the MOST freshwater located on our planet?
Antartica
which two countries have the greatest total ecological footprints
China and the US
A graph of the growth of the human population has what shape?
J
Globally, which RENEWABLE ENERGY RESOURCE is relied upon MOST for energy production?
Nuclear power
In general, exponential population growth starts slow and rapidly increases until
Resources have become limited
What may be a potential drawback to using biofuels as a renewable energy resource?
They compete with growing food crops
How have humans affected other species?
all of the above
The biological demand for ____ has stayed nearly the same over the last 45 years
all of the above
The human population is growing exponentially due to
all of the above
Which of the actions below would increase sustainability?
all of the above
Which of the following is a drawback to using coal as an energy source?
all of the above
nonrenewable resources
all of the above
which building design or modification would be found in an environmentally friendly city
all of the above
which correlates negatively with human population growth?
all of the above
What spurred the growth rate of the human population since the 1950s?
antibiotic development
An ecologically friendly city that has housing, work, and schools located close to each other would decrease the requirement for
cars
to determine the impact human populations have on an environment, scientists use which measurement
ecological footprint
The biological demand for this overshoots the sustainability of earth by 40%
energy
The process of water of going into the atmosphere is called
evaporation
The human population is growing
exponentially
Globally, which resource is relied upon MOST for energy production?
fossil fuels
Which resource is currently in greatest demand globally?
fossil fuels
which is NOT a renewable resource
fossil fuels
Which contains the most freshwater on our planet?
glaciers and ice caps
An ecological footprint is measured in
global hectares
All of the following are reasons for the rapid growth of human populations, EXCEPT
increased travel by boat
Why has the global demand for freshwater increased during recent history?
increases in population and agricultural
What is responsible for the six-fold increase in TOTAL freshwater withdrawals ini the 20th century?
irrigation for agriculture
Which contains the least amount of freshwater on Earth?
oceans
This nonrenewable resource supplies most of the world energy
petroleum oil
rain, snow, and hail are examples of
precipitation
Which of the following currently provides the greatest source of renewable energy?
solar power
why is the current lifestyle of the human population considered unsustainable?
the biocapacity of Earth is less than the global ecological footprint
what does an ecological footprint measure
the impact on nature as determined by a populations lifestyle
Why would a non developed country with a low per capita footprint have a total similar footprint to a more developed country?
the non developed country has a larger population
What is an environmental result from burning fossil fuels?
the release of greenhouse gases into the air
Why is there reluctance to eliminate fossil fuels as an energy source?
they are relatively cheap to obtain
aquifers are
underground rock stores of freshwater
To maintain a balanced water cycle, what needs to occur?
water withdrawals cannot exceed replenishment