II only
I and II only
II and III only
I, II, and III
20. Which of the following, if true, would most weaken Brown s conclusion?
The oyster gradually closed their shells after high tide in Illinois had passed.
The oysters behavioral rhythms maintained their adaptation to the tide schedule in Illinois throughout thirty days of observation.
Sixteen days after they were moved to Illinois, the oysters opened their shells widest when it was high tide in Connecticut.
A scientist who brought Maryland oysters to Maine found that the oysters opened their shells widest when it was high tide in Maine.
In an experiment similar to Brown s, a scientist was able to establish a clear causal relationship between environmental change and behavioral rhythms.
Picture-taking is a technique both for annexing the objective world and for expressing the singular self. Photographs depict objective realities that already exist, though only the camera can disclose them. And they depict an individual photographer s temperament, discovering itself through the camera s cropping of reality. That is, photography has two antithetical ideals: in the first, photography is about the world and the photographer is a mere observe who counts for little; but in the second, photography is the instrument of intrepid, questing subjectivity and the photographer is all.
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