Platforms
While an important source of freshwater, groundwater is not as widely used as rivers and springs.
Which of the following best explains why marine debris is not caused solely by countries bordering the ocean?a.Marine debris mostly originates from oceangoing ships.b.Debris is carried to the ocean by winds, rivers, and storms.c.Marine debris originates from natural sources.d.None of the above
Which of the following would be expected to have the greatest impact on primary productivity?a.chemical energyb.nutrient availabilityc.solar energyd.water availability
In which region would you find the lowest concentration of public land in the United States?a.the Pacific Northwestb.the West coastc.New Englandd.the Midwest
What characteristic sets streams and rivers apart?a.water qualityb.direction of flowc.sized.biodiversity
The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.a.hull foulingb.the aquarium trade in exotic, nonnative aquatic speciesc.intentional released.an algae farming company
Which of the following most significantly determines a community's 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
There is little variety among organisms found in pools, ponds, and lakes.
Desalination has no known negative impacts on the environment.
Zoning laws establish _______.a.what types of buildings can be built in an areab.the uses an area of land can be put toc.who can live in an aread.the types of business that can occupy a building
Biological pest control methods supplement but cannot replace chemical pest control methods.
Energy in most ecosystems must flow through autotrophs because ______.a.only autotrophs can convert solar energy into chemical energyb.autotrophs are simpler organisms than heterotrophsc.heterotrophs only generate a small fraction of their energy from photosynthesis.d.all of the above
Why does fossil fuel use in the United States make the U.S. vulnerable to the political wishes of foreign countries?a.The US is a net exporter of fossil fuels.b.Fossil fuels lead to global climate change.c.The US imports much of its petroleum from foreign countries which set the prices.d.All of the above.
Photosynthesis and carbon fixation can only occur in the presence of light.
How does the use of hydroelectric energy compare to the use of coal?a.Hydroelectric energy is more commonly used than coal.b.Hydroelectric energy is associated with less waste production than coal.c.Hydroelectric energy has a larger environmental impact than coal use.d.Hydroelectric energy requires more land space than coal use.
The percentage of a hunter-gatherer society’s diet provided by hunting versus gathering was mostly determined by _______.a.the climateb.the types of preyc.hunting skilld.the size of the human population
Which of the following is a benefit associated with the use of energy producing technologies excluding the burning of fossil fuels?a.reduced water useb.reduced air pollutionc.reduced habitat lossd.all of the above
Rivers and streams are biodiverse ecosystems that are sensitive to change.
The largest supply of Earth’s freshwater is stored in _______.a.lakes and riversb.groundwaterc.the atmosphered.glaciers and icecaps
Which of the following is a possible cost of using renewable resources?a.loss of animal speciesb.land degradationc.lower availability of freshwaterd.all of the above
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