Theories are developed so that they can not be found to be false.
Answer the following statement true (T) or false (F)
False
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NASA scientist Jim Hansen has recommended that we bring our atmospheric carbon dioxide levels down to _____ from the current level of _____ in order to maintain a planet with fairly constant atmospheric temperatures
a. 450 ppm, 500 ppm b. 350 ppm, 390 ppm c. 388 ppm, 450 ppm d. 488 ppm, 550 ppm e. 560 ppm, 660 ppm
What is the maximum number of stereoisomers possible for a molecule which has three stereocenters (assuming no other structural features that lead to steroisomerism)?
A) 2 B) 4 C) 8 D) 16
The area of subsurface where the pore spaces are filled with water is called the
A. water table. B. unsaturated zone. C. saturated zone.
Which of the following shoreline features does not belong with the others?
A) Bench B) Lagoon C) Terrace D) Notch E) Cliff