43. According to the passage, the ocean generally has more salt in
(A) coastal areas
(B) tropical areas
(C) rainy areas
(D) turbulent areas
44. All of the following are processes that decrease salinity EXCEPT
(A) evaporation
(B) precipitation
(C) runoff
(D) melting
45. Which of the following statements about the salinity of a body water can best be
inferred from the passage?
(A) The temperature of the water is the most important factor.
(B) The speed with which water moves is directly related to the amount of salt.
(C) Ocean salinity has little effect on sea life.
(D) Various factors combine to cause variations in the salt content of water.
46. The word "altered" in line 16 is closest in meaning to
(A) determined
(B) changed
(C) accumulated
(D) needed
47. The world "it" in line 18 refers to
(A) sea ice
(B) salinity
(C) seawater
(D) manner
48. Why does the author mention the Weddell Sea?
(A) To show that this body of water has salinity variations
(B) To compare Antarctic waters with Arctic waters
(C) To give an example of increased salinity due to freezing
(D) To point out the location of deep waters
49. Which of the following is NOT a result of the formation of ocean ice?
(A) The salt remains in the water.
(B) The surrounding water sinks.
(C) Water salinity decreases.
(D) The water becomes denser.
50. What can be inferred about the water near the bottom of oceans?
(A) It is relatively warm.
(B) Its salinity is relatively high.
(C) It does not move.
(D) It evaporates quickly.