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.

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences