Which of the following is NOT true about tides?
(a) They are produced solely by the gravitational pull of the sun.
(b) They are complex daily oscillations in sea level.
(c) They are influenced by the size, depth, and topography of ocean basins.
(d) They are influenced by shoreline configuration and latitude.
Ans: (a) They are produced solely by the gravitational pull of the sun.
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What will be an ideal response?
Prior to 1768, which of the following claimed the most human lives at sea?
A) Scurvy B) Contagious disease C) Gunfire D) Shipwreck
Mercury
A. is bio-concentrated (concentrations increase up the food chain), with the result that large fish like tuna may contain unacceptable levels. B. may be added to the atmosphere through the burning of coal, incineration of waste, smelting association with ore processing and processing of batteries. C. is most toxic to humans in the form of methyl mercury. D. is transferred from the atmosphere into water, where microorganisms transform it to methyl mercury. E. All of the choices are correct.
Which of the preserve shapes shown is the worst shape for a species that requires a core area?
A. A B. B C. C D. D E. All of the shapes have about the same measurements