18. When you first try a new food along with other foods, if you get sick you will tend to blame the new food
first
19. A Big Mac is an example of a secondary reinforcer
20. If you inflict a painful shock every time a person says a bad word, this is an example of negative
reinforcement
21. A subject that is physically punished is more likely to learn to avoid punishers rather then unlearn the
behavior that they are being punished for
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typical characteristics of global cities include all of the following except being culturally isolationist.

explanation:

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on

the correct answer is b

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