In the aftermath of Mt. Pinotubo's eruption, local effects
A) included acid rain, erosion, and landslides.
B) subsided after a few days.
C) on climate have produced numerous extinctions.
D) on soils have left most of the Philippines without fertile soil.
A
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The growth rate from a few thousand people about 160,000 years ago to 7.5 billion in 2017 represents ________ growth.
A. logarithmic B. linear C. exponential D. algebraic
Proposed causes of past ice ages include all of the following except
A. volcanic eruptions. B. changes in the earth's magnetic field. C. continental drift. D. changes in solar activity.
Winds are deflected by ________, caused by the rotation of Earth
A) the Coriolis effect B) the greenhouse effect C) the Milankovitch cycles D) gyres
Which low-grade metamorphic rock displays thin, parallel layers and contains very fine grains of mica?
A) Schist B) Gneiss C) Anthracite D) Slate