Wild species' instrumental value includes their use as
a. food crops
b. fuelwood
c. sources of medicine
d. lumber
e. food crops, lumber, fuelwood and sources of medicine
D
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What was the population of the Earth (as of the book's publication)?
A) over 7 million B) nearly 2 billion C) over 7.4 billion D) 670 million E) nearly 2 trillion
What influences contour currents?
a. Salinity b. Density c. Topography d. Trade winds
Nuée ardentes erupt from:a
supervolcanoes. b. shield volcanoes. c. fissures. d. lava domes. e. cinder cones
Since the Industrial Revolution, climate change data shows that ________
A) glacial regions are decreasing while forestry areas are expanding B) rainfall has increased significantly in eastern North and South America C) rainfall has decreased significantly in North America and Europe D) desert and glacial regions are increasing E) glacial regions are increasing while more forestry areas are expanding