What organism uses the tides, specifically high spring tides, to time their breeding behaviors?
a. Fiddle crabs
b. Grunion
c. Hantzchia
d. Sand crabs
ANS: B
The grunion come in just after the highest spring tides to deposit and fertilize eggs. This provides
protection to the eggs from marine predators while they develop. Information can be found in the
section Tidal Patterns Can Affect Marine Organisms
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What was the purpose of the White Australia Policy?
A) to promote immigration of (white) North Americans and Europeans to Australia at the expense of non-white groups B) to promote the emigration of Australians who were of European descent to other nations in the South Pacific C) It was an ethnic isolationist policy established by the Australian government, which sought to place the country's entire aboriginal population on reservation-like holdings in the far western portion of the country. D) to encourage Australians of European descent to migrate from Australia's densely settled east coast to the more sparsely settled interior and west coast E) to clean up the country's white sand beaches, which had been seriously polluted by mining
The formation of continental glaciers over vast areas of North America is most favorable when
Northern Hemisphere summers are __________ and winters are __________. a. cool, extremely cold b. cool, mild c. warm, extremely cold d. warm, mild
What type of metamorphism would occur in this setting? 
A. regional metamorphism B. contact metamorphism C. normal faulting D. subduction
Instructions: Choose one answer from each pair of selections. If you use liquid-in-glass thermometers to record temperatures below -50°C, you will need one that uses ALCOHOL | MERCURY as a liquid