About what percentage does water expand when it freezes?
A) 90%
B) 9.0%
C) 0.9%
D) 0.0%
B
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What has been the trend in human evolution since the appearance of the Cro-Magnons?
a. Several small subspecies have appeared, acclimated to mini-environments. b. Evolution has proceeded slower than usual. c. Evolution has become cultural rather than biological. d. Peripheral speciation has resulted in the emergence of the Neanderthals.
e. Size of organisms has steadily decreased.Making the shift to more sustainable economies will require governments, schools, and industries to ____.
A. greatly decrease spending on research and development B. decrease spending on scientific and engineering education C. give all students a basic economic education D. include neoclassical economic concepts in educational curricula E. develop business schools that include sustainable business planning
Carbon dioxide is a naturally occurring component of the atmosphere
a. True b. False
Most of the mass of a glacier behaves fluidly. Indicate whether the statement is true or false