Without the atmospheric greenhouse effect, the average surface temperature would be
a. ?higher than at present.
b. ?lower than at present.
c. ?the same as it is now.
d. static
e. ?radiative
ANSWER: b
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Earth's carrying capacity for the human species has
A. remained largely unchanged over time. B. created large amounts of energy. C. increased as a result of technological, social and cultural changes. D. decreased as a result of technological, social and cultural changes. E. follows a consistent upward growth trend regardless of population crashes
Relatively stable, immobile parts of continents that form the foundation on which Phanerozoic
sediments were deposited:a. craton d. clastic wedge b. mobile belt e. back-arc basin c. orogen
Most of the U.S. population presently lives west of the Mississippi River
Indicate whether the statement is true or false
Consider a certain carboxylic acid at physiological pH of about 7.4. Assume the following general reaction. HA(aq) + H2O(l) ? H3O+(aq) + A-(aq) What will happen to the ratio of the deprotonated to protonated form, respectively, if the pH of the solution drops to 6.2?
A) It will decrease. B) It will increase. C) It will remain constant. D) It will decrease then increase since it is a buffer.