-
Which of the following fuels is considered a “transition fuel”?
Natural gas
-
How can volcanic eruptions cool the climate?
Dust and associated clouds reflect sunlight back into space.
-
Organic chemicals are _________ -based compounds.
carbon
-
What was the cause of the "dust bowls" in the 1930s?
soil degradation
-
Biological control is the use of _______ and _______ to control agricultural pests.
predators, parasites
-
______ is a product of uranium decay as well as an indoor air pollutant.
radon
-
Water demand during the past half-century has ______ as the human population has more than _______.
tripled, doubled
-
Earth's orbit is__________.
eliptical
-
Methane can be produced by certain kinds of _______ that live where there is no ________.
bacteria, oxygen
-
The United States gets most of its electric power from which source?
coal
-
The major human activities causing a decline in fish populations are:
overfishing, pollution, and habitat destruction.
-
Upwellings cause nutrients to be ________.
released from ocean sediments into the water column
-
Ice floats because ___________.
it becomes less dense when it freezes
-
A(n) _________ is an underground layer of rocks, sand or gravel that contains usable groundwater and releases it in significant amounts.
aquifer
-
Intertidal areas _______.
flood and drain twice a day
-
Milankovitch suggested that climatic cycles of about 40,000 and 20,000 years could result from changes in Earth’s _________.
tilt and wobble
-
What is thermal pollution?
Heat released into water or the air, producing undesirable effects.
-
Isotopes are atoms of an element that are chemically the same, but have different atomic weights because they have different numbers of ______.
neutrons
-
A person flying over the Chernobyl site two days after the explosion most probably experienced a(n) ________ to radioactive substances.
acute exposure
-
As a toxic substance moves through the food chain, it becomes _________ in concentration; the __________organism in the food chain will likely receive more harm than a ________ organism.
biomagnified, top level, bottom level
-
In most parts of the world, what is the relationship between higher living standards and meat?
Higher living standards mean a greater demand for meat.
-
Higher living standards mean a greater demand for meat.
salinization
-
Acid runoff is most associated with which of the following mining activities?
strip mining
-
The three most toxic metals to humans are:
mercury, thallium, and lead
-
Aquaculture is ____________.
the cultivation of things that live in water
-
A carcinogen is:
a toxin that increases the risk of cancer.
-
In the U.S., the single sector which consumes the greatest portion of the water supply is ________.
agriculture
-
What is the estimated range of Earth's carrying capacity of human beings?
0.5 - 800 billion
-
Which of the following are all renewable sources of energy?:
solar, wind, wood
-
What is the leading cause of desertification?
Poor farming practices
-
The U.S. Water Resources Council estimates that water use in the United States by the year 2020 may exceed surface water resources by ________ percent.
13%
-
Synergism is the interaction of:
different types of substances, resulting in a combined effect that's greater than the additional effect of each substance individually.
-
Water has a ________ capacity to absorb and store heat.
high
-
The effects of flooding are more destructive today than in the past because ______
more buildings are constructed on flood plains.
-
___ happens when runoff carries fertilizers to water bodies and causes the growth of aquatic algae.
Eutrophication
-
Ocean water may be treated to remove salt in the process of:
desalination
-
The Southern Oscillation is known informally as:
el Nino
-
Organic farming is producing food without _____
artificial pesticides, antibiotics, and hormones
-
The majority of the pesticides found in U.S. waters are_____
herbicides
-
Intertidal areas _____
flood and drain twice a day
-
What is a terminator gene?
A gene that makes seeds sterile.
-
The sea level is now more than 120 meters higher than at the peak of the last ice age, and satellite measurements indicate that it is rising about ________ a year.
1/8 inch
-
Fish are the main source of animal protein for about ______ people worldwide.
1billion
-
Albedo is _____
the percentage of light received by a surface that is reflected and scattered
-
Mobile sources of pollution originate from _____
transportation
-
Why does the population generally disapprove of nuclear power sources?
fear of radioactivity
-
97% of all water on earth is in the oceans. Which of the following is the correct order of the Earth's water storage compartments?:
Oceans, ice caps, groundwater, lakes, atmosphere, rivers.
-
In 1989, an oil tanker spilled 11 million gallons of oil into the Prince William Sound. What was the name of the ship?
Exxon Valdez
-
Overdraft occurs when we take ______
take more ground water than can be replaced naturally
-
According to the textbook, when are we expected to reach peak oil production?
2020-2050
-
Geothermal energy is defined as _______
natural heat from the interior of the Earth.
-
The big three plants that most people in the world eat are:
rice, wheat, and corn.
-
What is the main alcohol found in biofuel?
ethanol
-
Which includes the other three?:
Risk analysis
-
The oceans are warmed by the sun in the tropics. These warmed waters expand and flow north (in the Northern Hemisphere) along the surface, bringing their heat to northern latitudes. As they reach the North, these warm waters give up their heat and, as they cool, condense, become heavier, and sink, returning in the depths to the tropics. This global circulation is called the __________.
ocean conveyor
-
The United States, with 5% of the world’s population, uses about _____ of the total energy?
20%
-
According to a post on the discussion list quoting John Tierney, the primary beneficiary of some recycling programs are ___
people involved in waste handling politics
-
According to a post on the discussion last, bottled water contains more potentially harmful ____ than tap water.
phthalates
-
The interaction of different substances where the combined effect is greater than the sum of the effect of the separate substances:
synergism
-
Biomagnification is associated with all of the following except:
the development of tolerance to a pesticide or toxin
-
All of the following are infectious agents except:
dioxin
-
All of the following were once primary sources of lead except:
air ventilation ducks
-
How a chemical affects an individual depends on:
the dose of the exposure
-
Salinization is:
buildup of salt in soil
-
The single most effective way to reduce soil erosion is to use:
contour plowing
-
Soil erosion became a concern in the U.S. following:
the Dust Bowl
-
IPM is a(n) ___________ approach to pest management
ecosystem
-
Which is not a fossil fuel?
geothermal energy
-
Which of the following offers the most potential in terms of reducing the energy problem in the US?
conservation
-
All are features of passive solar design except
photovoltaic cells on the roof of a house
-
A type of biomass energy is:
wood
-
Fuel cells use (i)_______________ for energy and release (ii)_______________ as waste.
hydrogen, water
-
Use of groundwater at a rate faster that it is naturally re-supplied is called:
overdraft
-
Massive and rapid algae growth is stimulated by the addition of_______to surface water bodies.
nitrogen and phosphorus
-
What does B.O.D. stand for?
Biochemical Oxygen Demand
-
The average person in the United States uses ______ gallons of water per day.
100
-
Shrimp farms threaten the existence of:
Mangrove forests
-
Continental shelves provide _________ of the fishery harvest.
90%
-
The goal of the Marine Mammal Protection Act is:
Optimum sustainable population
-
Upwellings provide fish with:
nutrient rich water
-
Which is not a greenhouse gas?
sulfur dioxide
-
Which is not a predicted outcome of global climate change?
Ocean water becomes alkaline
-
How much of an increase of atmospheric carbon dioxide has occurred since the beginning of the Industrial Revolution?
32%
-
Which refers to the accumulation of a substance in living tissue as it moves through the food web:
biomagnification
-
No-till agriculture has___________soil loss in the United States.
decreased
-
IPM stands for:
Integrated Pest Management
-
Most of the world's food is provided by only______plant species.
14
-
BT :
attacks only specific pests and is safe for humans
-
Which is NOT a major genetically modified crop?
wheat
-
How much of the total world energy does the US consume?
20%
-
Where does most of the coal in the US come from?
strip mining
-
Fuel-cell-powered cars use ___________ as a fuel.
hydrogen
-
When discussing sources of fossil fuels, a reserve can be defined as:
a source we can access now for a profit
-
____ is the ability to move matter.
energy
-
Half-life is:
the length of time for one-half of a isotope to decay to another form
-
Which is not usually associated with eutrophication?
Increased heavy metal concentrations
-
The greatest use of fresh water is for:
irrigation
-
The largest groundwater deposit in the world is the:
Ogllala aquifer
-
Seawater is about _______salt.
3.5%
-
Groundwater accounts for _____of all water used in the United States.
20%
-
A high B.O.D. in a river indicates
that the water quality of the river is poor
-
Open oceans are called:
Pelagic zones
-
Where do most fish we eat come from?
continental shelves
-
Algae does not grow in the ________
benthos
-
The Gulf Steam provides warmth to:
Northern Europe
-
20% of the nation's commercial shellfish beds have been closed because of:
pollution
-
During the last two million years or so, the climate of the Earth has:
Swung sharply both up and down in temperature
-
The atmosphere of Venus and Mars is made up of mostly:
Carbon dioxide
-
Use of CFCs as propellants was banned in the United States in ______
1978
-
Which of the following activities reduces the emissions of nitrous oxide into the atmosphere?
using less fertilizer
-
How much atmospheric carbon is emitted in the United States?
20%
-
Fish are the main source of protein for ~ _______ of the population.
.17
-
Name the three major nuclear radiation particles
gamma, alpha, beta
-
Which species has caused the most controversy and greatest regulation of logging practices in the Pacific Northwest?
spotted owl
-
A stream that only flows during or shortly after rainfall or during snowmelt may be called _________
ephemeral
-
Aerosols reduce the amount of sun that hits the earth by 10% leading to a 50% reduction in associated global warming. This is known as:
global dimming
-
The upper surface of groundwater is called the:
water table
-
Contamination:
implies something unfit for a particular use through the introduction of undesirable materials.
-
Farming can cause:
a loss of biodiversity
-
Which soil layer contains organic and mineral materials?
A horizon
-
Define synfuels.
liquid or gaseous fuel from solid fossil fuels
-
About ________ percent of earth's water is generally suitable for human use:
1%
-
What are the 3 major forms of fossil fuels?
oil, natural gas, coal
-
Continental shelves are:
the underwater edges of the continents
-
Aerosols are less than ____________ and because they are so small, they can remain in the atmosphere a very long time.
10 microns
-
A stream that flows all year is called a ___________ stream.
perennial
-
____ is used as the primary source of drinking water for nearly half the people in the United States.
ground water
-
A volcano erupts with a large amount of ash expelled. The temperature can be expected to:
decrease
-
A "commons" is:
international territory, used by many nations
-
Earth's energy balance is the balance between the amount of energy coming:
in from the sun and the amount of energy radiated out by the Earth.
-
In ideal farming, the amount of soil lost would never be than the amount of new soil.
greater, produced
-
Continental shelves make up only ________% of the oceans, yet provide more than ______ of the fishery harvest, and ______ of the worldÕs fish catch are made in upwellings.
10, 90, 1/2
-
Water has a ________ capacity to absorb and store heat.
high
-
What organic matter found in abundance in the seafloor could be a new source of natural gas?
methane hydrates
-
Which is an example of passive solar energy use?
planting a deciduous tree in front of one's home for more sunlight exposure in the winter and less sunlight exposure in the summer
-
Wetlands are natural _____ that help ______ water; plants in wetlands trap ______ and _____
filters, purify, sediments, toxins
-
DDT is stored in _____ allowing the chemical to be transferred up the food chain.
fats and oils of animals
-
What are the three major crops produced in the world?
rice, corn, wheat
-
To be considered freshwater, seawater of 3.5% salt content must be desalinated to ______ % salt content.
0.05
-
Minamata disease is caused by:
mercury poisoning
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