Which statement is true of an equinox?
a. The hours of daylight and darkness are exactly the same all over Earth.
b. Daylight is longer than darkness over the Northern Hemisphere.
c. Darkness is longer than daylight over the Northern Hemisphere.
d. The hours of daylight and darkness in each hemisphere vary according to the local season.
a
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The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer
A) The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules. B) The pressure is greatest at the top because the higher temperature means a greater number of vaporized molecules. C) The pressure is greatest at the bottom because the lower temperature means a greater number of vaporized molecules. D) The pressure is greatest at the top because the lower temperature means a greater number of vaporized molecules.
The Middle East has about ________ percent of the world's oil reserves.
A. 72 B. 62 C. 50 D. 90
What type of feature is shown in this photograph? A stream flows through the feature and was involved in its formation.
A. natural arch B. meteorite impact C. crescent dune D. natural bridge E. None of these choices are correct.
The portion of a fracture zone between two offset portions of a ridge crest is called a transform fault.
Answer the following statement true (T) or false (F)