• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/10

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

10 Cards in this Set

  • Front
  • Back
Most water stored in aquifers eventually flows back into
rivers and lakes.
sewers.
wells.
reservoirs.
a
The 1974 U.S. law that established safety standards for drinking water was the
Safe Groundwater Act.
Safe Drinking Water Act.
Pure Food and Drug Act revisions.
Environmental Protection Act.
b
The upper layer of the Earth's atmosphere is called the
stratosphere.
biosphere.
troposphere.
ozone layer.
a
Which 1990 U.S. law established national emission standards for more than 100 different air pollutants?
Pollution Act of 1990
Emissions Act of 1990
Smog Act of 1990
Clean Air Act of 1990
d
What flame retardant chemical used in plastic and foam products accumulates in human tissue and may cause chromosome abnormalities?
nitrogen oxide
formaldehyde
asbestos
polybrominated diphenyl ethers
d
The garbage collected by municipalities from businesses and homes in the United States accounts for about ____ percent of the solid waste created in this country.
5
20
1
10
c
Overgrazing and over-cropping activities that destroy the fertility of land result in
desertification.
deforestation.
second-growth conversion.
old-growth conversion.
a
Forests are considered renewable resources regardless of how quickly they are cleared.

True
False
false
Although the United States contains 4.5 percent of the world's population, it uses ___ percent of the world's commercial energy.
20
50
10
24
d
The maximum population level that supports an optimum standard of living is called global carrying capacity.

True
False
false