10) In general, natural resources ________.
A) should not be used
B) should be conserved
C) belong only to those on whose property they exist
D) are evenly divided among all countries
E) should be used by everyone equally
11) Solutions to environmental problems ________.
A) can be implemented only by scientists
B) must be sustainable
C) must be on a local scale
D) must be left to industry
E) are best discussed in the political arena
12) Ruben has a new puppy and wants to feed it the best possible food. He decides on an
experiment where he will feed it the very best canned food plus a dietary supplement of vitamins
recommended by a veterinarian. Which of the following best describes Ruben’s project?
A) This is an example of a good controlled experiment.
B) Ruben needs to take measurements of the puppy’s weight and height at least once a week for
it to be a good experiment.
C) Ruben needs to control for the amount of exercise, water, and care that the puppy gets each
week, so that they are equal from week to week.
D) Ruben needs to feed his mother’s 6-year-old chocolate Shar-Pei a standard diet so he can
compare his puppy with a control dog.
E) This is not an experiment—there are no controls or replicates.