Air pollution deaths related to a four-day long temperature inversion in London, England in December of 1952 resulted in an estimated ________ deaths.
A. 6,000
B. 3,000
C. 12,000
D. 9,000
Answer: C
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As soils mature, distinct layers called ________ appear.
A. layers B. units C. strata D. horizons E. beds
Holding a card with a tiny opening in sunlight produces an image of the Sun on the ground below. If you hold the card a bit closer to the ground, the pinhole image is
A. smaller. B. larger. C. the same size. D. impossible to say
A resurgent dome ____
a. ?forms in the collapsed magma chamber of a stratovolcano or shield volcano b. ?is a precursor to an eruption of a shield volcano c. ?is a precursor to an eruption of a stratovolcano d. ?is a pumice formation created by the release of volatile gasses e. ?forms inside of a continental caldera
Which of the following is a factor in the Earth's atmosphere?
A. composition B. albedo C. electromagnetic radiation D. geoengineering