When Suzie touches a piece of ice with her finger, energy flows
A. from the ice to her finger.
B. from her finger to the ice.
C. both of these
D. none of the above
Answer: B
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A species of bird had an original range covering the entire eastern half of the United States from New England west to the Mississippi and then south to Florida
During a period of glaciation, the eastern part of the population was cut off from the western part for 2000 years. Then the glacier melted and the birds' range was reestablished. During the separation, the western birds evolved a slightly different song and a darker wing color. Ornithologists are now studying this species to determine whether speciation has taken place. What evidence will they look for in their study?
Asteroids large enough to destroy most life on Earth have been documented to strike the planet in the past.
Answer the following statement true (T) or false (F)
Which of the following is most resistant to damage by exposure to radiation?
A) bacteria B) human tissue C) viruses D) They are all equally resistant to damage.
An unconformity is a buried ________
A) surface of erosion with older strata above and younger strata below B) fault or fracture with younger strata above and older strata below C) surface of erosion separating younger strata above from older strata below D) fault or fracture with older rocks above and younger rocks below