The pH scale is the logarithmic measure of hydrogen ion concentrations. Indicate whether the statement is true or false
ANS: T
The change of one pH unit is a ten-fold change in hydrogen ion concentration. Acids are on the lower
end of the pH scale while basses are on the upper end. The scale goes from 0 to 14 units. The pH
measurement of 7 is neutral on the scale. Information can be found in the section The Ocean's Acid-
Base Balance Varies with Dissolved Components and Depth.
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What is the origin of curved ridges (R on this figure) in the Great Lakes area?
A) Folds produced during a continental collision
B) Paths of ancient rivers
C) Piles of sediment deposited by retreating glaciers
D) Remnants of a meteoroid impact
Zero population growth is best represented by a
A) TFR of 2.1 percent. B) doubling rate of 2.1 percent. C) CBR equal to the CDR. D) negative NIR. E) CDR greater than CBR.
Sunni and Shi'ite represent branches of Islam based on
A) ethnicity. B) socioeconomic status. C) profession. D) religious calendars. E) disputes over religious leadership.
The seesaw pattern of atmospheric pressure between the eastern and western Pacific Ocean is called the _______________ Oscillation
Fill in the blank(s) with correct word