What are some potential benefits of volcanoes?
A) using geothermal activity to generate energy
B) ash enriches soil fertility
C) tourism
D) tourism, increased soil fertility and geothermal energy
D
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A geologist observes abundant fossils of a distinctive trilobite species in a shale, but this trilobite disappears as she walks through the shale
In younger rocks, just above the horizon where the fossil disappears another species of trilobite becomes the prominent fossil in similar shales. Which conclusion is most logical for this observation? A) A hurricane or other catastrophe killed all of the early species so the other species could move in. B) The second, trilobite group in the upper section went extinct where the change in fossils is seen. C) The organisms whose remains form the first fossil moved from the area for unknown reasons. D) The first trilobite species went extinct and its ecological niche was occupied by another species, which may have evolved from the first.
Many of the civil wars in Central Africa are based on __________.
a. political control b. civil unrest c. ethnic conflict d. all of these e. control over valuable resources
Most of the world's aluminum ore is derived from:
a. pedocals b. pedalfers c. laterites d. none of the above
What is the name for the process in which glycogen is converted to glucose?
A) digestion B) glucogenesis C) glycogenolysis D) none of these