Coal is derived from ________ compressed and hardened over millennia.
A. Lava
B. Vast forests
C. Plant material from swamps
D. Phytoplankton
Answer: C
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The environmental justice movement started because __________.
a. people realized that environmental damage is not equally distributed among all classes and racial groups; minority and low-income communities tend to contain a much larger share of the environmental damage (such as landfills, incinerators, toxic waste sites, etc.) b. corporate polluters were not serving jail time for breaking environmental laws c. Aldo Leopold published The Land Ethic. d. the Environmental Protection Agency was not doing its job
In the above HR diagram, which main sequence star is bluish in color?
A. A B. B C. C D. D E. E
Secure landfills are usually sealed with
A. Stones B. Gravel C. Sand D. Clay E. Dirt
Which of the following greenhouse gases is also destroying the ozone layer?
A) Carbon dioxide (CO2) B) Chlorofluorocarbons (CFCs) C) Methane (CH4) D) Nitrous oxide (N2O) E) Water vapor