At any given moment, what percentage of Earth is cloud-covered?
A) 5 B) 25 C) 50 D) 75 E) 90
C
Environmental & Atmospheric Sciences
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Most of the recent deaths from tuberculosis have been caused by long exposure to polluted air in industrialized countries.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
Which of the following is a major cause of increasing ocean acidification?
A. eutrophication B. construction of dams and levees C. rising sea level D. rising levels of CO2 E. decreasing dissolved oxygen
Environmental & Atmospheric Sciences
Which naturalist was fascinated by the countryside around Concord, Massachusetts and wrote of his experiences living close with nature?
A. Lewis Thomas B. Ralph Waldo Emerson C. Henry David Thoreau D. Rachel Carson
Environmental & Atmospheric Sciences
How long does it take for the Earth to make one rotation on its axis?
A. 24 hours B. 365 days C. 60 seconds D. 1 hour E. 30 days
Environmental & Atmospheric Sciences