Surface winds normally move across most of the tropical Pacific in a(n) ____ direction
A) northeast
B) west to east
C) east to west
D) northwest
C
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What is not true of a rogue wave?
a. The constructive interference of many wavelengths b. A wave much larger than the theoretical maximum wave sustained by a fully developed sea c. A freak, unpredictable wave d. A predictable but large wave
These deep-sea holothurians (sea cucumbers) and brittlestars obtain food by
1.eating prey that swim past.
2.eating mud and digesting the bacteria and organic matter in it.
3.migrating vertically to the euphotic zone each night.
4.autotrophic means – they photosynthesize.
As pure water approaches its freezing point, the density decreases. Why does this happen?
A) The water compresses into ice. B) The hydrogen bonds become rigid, allowing it to expand slightly. C) The hydrogen bonds break as the molecules compress. D) Ice takes up a smaller surface area than liquid water.
Coal supplies ____ of the electricity generated in the United States
a. 54% b. 34% c. 44% d. 24% e. 84%