The relative direction and average rate of plate movement can be calculated using ____
a. accreted ophiolite studies
b. hot spots
c. subduction rate measurements
d. magnetic anomalies and satellite-laser ranging
e. spreading ridges
d
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Biomass energy is energy contained in ________
A) the Earth's heat B) firewood and other plant material. C) the sun D) wind E) water
In recent decades, popular customs have most frequently originated in
A) more developed countries. B) less developed countries. C) formerly communist countries. D) countries with large rural populations. E) Latin America and Africa.
What is NOT one of the projected impacts of sea-level rise linked with a warming climate?
A. complete inundation of low-lying islands B. heightened risk of tsunami incidence C. inundation of coastal plains and settlements D. expose coasts to greater storm risks E. general retreat of coastlines
At present, what percentage of the world's people live in cities?
A. 10 B. 25 C. 50 D. 75