What technology made suburbs possible?
A) automobiles
B) highways
C) telephones
D) electrical energy
E) all of the above
E
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If pairs of enantiomers are only counted once, how many aldehydes with the molecular formula C5H10O are chiral?
A) 0 B) 1 C) 2 D) 3
In the real world, population explosion is usually followed by
A. A continuation of high population levels indefinitely B. A population crash C. A tremendous increase in genetic diversity D. A gradual increase in population due to the availability of mates E. A gradual decrease in population as food supplies dwindle
Which of the following is NOT correct regarding coral bleaching?
A) The warming of sea-surface temperatures is a great threat to coral. B) The 1998 El Niño event caused the die-off of an estimated 30% of the world's reefs C) Scientists have identified the reasons polyps eject their algae. D) Coral reefs are under pressure from overfishing, pollution, sedimentation, and global warming.
The carrying capacity is the number of individuals an environment can support. Indicate whether the statement is true or false