Organisms which feed only on bacteria are called ________
A) autotrophic
B) bacteriovores
C) carnivores
D) herbivores
E) omnivores
B
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In his Pulitzer Prize-winning book, Guns, Germs, and Steel, Jared Diamond attributes the conquest by Europeans of the Americas, Africa, Pacific Islands, and portions of Asia to a host of factors. Which among the following is not mentioned by Diamond as a reason?
A. Eurasia's abundance of cultivatable plants B. Eurasia's supply of large animals suitable for domestication C. Eurasia's biological stock of advantageous racial characteristics D. Eurasia's east-to-west orientation of similar climates and landforms
Wind erosion occurs by ____
A)saltation only B)abrasion only C)deflation only D)saltation and abrasion E)abrasion and deflation
Urban is defined by the U.S. Census Bureau as ________
A) areas where patches of commercial and residential developments are interspersed in a matrix of rural land B) a large central city and adjacent communities C) the parts of a metropolitan area located outside the central city D) an area where the average population density is at least 500 people per square mile E) an area with more than 10 million inhabitants
Some of the first experiments in cloud seeding were conducted by Vincent Schaefer and Irving Langmuir during the late 1940s. To seed a cloud, they dropped crushed pellets of ____ from a plane.?
a. ?silver iodide b. ?silver iodine c. ?lead iodide d. ?cupric sulfide e. ?dry ice