Which of the following is the conjugate acid of water?
A) HCl
B) H3O+
C) NH4+
D) OH-
B
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In what region of Sub-Saharan Africa is desertification most severe?
A) the Kalahari B) the Sahel C) the Congo D) the Horn of East Africa E) South Africa
Sharks, skates, rays, and chimaeras comprise the class ____________, and have a skeleton made of tough, elastic
____________. Fill in the blank(s) with the appropriate word(s).
China, Malaysia, and Indonesia are examples of developing nations that have
A) successfully entered the global market. B) been unable to escape the poverty-debt trap. C) become fragile states. D) not yet entered the process of demographic transition.
Which of the following is NOT one of the types of deposits associated with hot springs?
A. terraces B. cones C. concentric deposits D. domes E. speleothems