Kudzu is a vine that was brought to the United States from Japan to prevent erosion. Once here, kudzu became invasive. What role does kudzu most likely play in the environment in the United States?
There is a single instrument to measure climate change.
Which of the following about the ozone layer is not true?a.The ozone layer is formed in the stratosphere.b.The ozone layer helps sustain life by absorbing a large amount of incoming UV radiation.c.Ozone in the troposphere is beneficial to living organisms.d.Depletion of the ozone layer can lead to an increase in skin cancer.
The principle difference between point source and nonpoint source water pollution is _______.a.whether the pollution is organic or inorganicb.the number of sources of pollutionc.the amount of pollutiond.whether it is from commercial or agricultural sources
A balance in abiotic factors is vital to healthy ecosystems.
Which of the following statements about change in ecosystems is true?a.Ecosystems experience change through human activity only.b.Ecosystems experience change through natural events only.c.Ecosystems experience no change.d.Ecosystems experience change through human activity and natural events.
Which of the following statements about Earth’s cycles is not true?a.Earth’s cycles move matter between abiotic and biotic factors of the environment.b.The various cycles found on Earth are vital to life.c.Some of Earth’s cycles are a direct result of human action.d.Earth’s cycles convert nonliving elements into forms usable by organisms.
Flooding on rivers is caused by human activity rather than natural events.
How does groundwater become polluted?a.Pollutants mixed with water pass through permeable layers above the aquifer.b.Factories dump their waste directly into aquifers.c.Refuse infiltrates the water table when garbage is dumped.d.All of the above
The overall population of a species decreased. What could have occurred to make this happen?
Which of the following is true about ice ages?a.forests are plentiful and commonb.biodiversity is reducedc.ecosystems are createdd.glaciers recede
The Clean Air Act would be a reason for the Environmental Protection Agency (EPA) to regulate car emissions.
It is important to maintain septic systems in order to _______.a.prevent treated sewage from contaminating groundwaterb.process human waste into fertilizerc.prevent untreated sewage from contaminating groundwaterd.none of the above
What happens to water in the atmosphere as it rises?a.It evaporates.b.It condenses and forms clouds.c.It combines with other gases in the air.d.It is used up.
Wind, solar and geothermal power are called renewable energy sources because _______.a.tax breaks for these sources are renewed every yearb.they are continuously replenishedc.humans can replenish these sources periodicallyd.they produce few toxic byproducts
Ozone is formed when _______.a.two oxygen molecules combineb.an individual oxygen atom combines with an oxygen moleculec.ultraviolet radiation breaks apart four oxygen moleculesd.oxygen molecules are broken into separate atoms
The largest supply of Earth’s freshwater is stored in _______.a.lakes and riversb.groundwaterc.the atmosphered.glaciers and icecaps
Which of the following would not be considered a point source pollution contributor?a.an animal feedlotb.cattle on rangelandc.a paper milld.a slaughterhouse
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
The thickness of Earth’s crust depends upon _______.a.whether it is continental or oceanicb.the temperature of the outer corec.how volcanically active the region isd.all of the above
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