Feldspars ____
A)are only abundant deep in Earth's core
B)never have a tetrahedral crystal structure
C)are nonferromagnesian silicates
D)are carbonate minerals
E)have iron as a major element
C
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The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because
A. the positively charged protons were repelled away from the explosion. B. the more massive neutrons made better targets for nucleon collisions. C. it takes more energy to create a neutron from a proton than a proton from a neutron. D. it takes more energy to create a proton from a neutron than a neutron from a proton.
What local signs predict the approach of a low-pressure centre or a weather front?
What will be an ideal response?
Cities tend to create distinct microclimates.
Answer the following statement true (T) or false (F)
Technological optimists argue that technological advances have:
A. Been a neutral factor in the issue of population growth B. Been developed because there are more people, supporting the view that more people are the "ultimate resource." C. Proved Marx wrong in his predictions of famine and disaster D. Proved Malthus wrong in his predictions of famine and disaster E. Led to the increase in human population, but whether we can continue is of great concern