Osteoporosis is associated with which of the following?
A) an improper Na+/K+ balance
B) increased calcium buildup in the bones
C) loss of calcium from the bones
D) none of the above
C
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The proof for the long-doubted idea of drifting continents came in the form of the realization Earth is organized into ________
A) many areas of sedimentary rock B) the lithosphere and the hydrosphere C) mountains and valleys D) tectonic plates E) oceans and continents
Describe the four stages of the breakup of Pangaea. What will be an ideal response?
Which of the following zooplankton include the hydrozoans and the scyphozoans?
A) Cnidarians B) Coccolithophores C) Ctenophores D) Foraminifers E) Radiolarians
Sudbury, Ontario's copper-nickel smelter is notorious for having
A. Destroyed the local ecosystem with sulfur-laden smoke B. Spread cyanide in nearby rivers C. Caused childhood leukemia in nearby neighborhoods D. Caused brown lung disease in miners E. Caused all of these