Answer:
Plants have rigid tubes made of cellulose.
Explanation:
Plants have rigid tubes made of cellulose that provides structure and form.
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The puppy no longer greetng Molly when she enters the house is an example of extinction. This is because the puppy lacks motivation to greet her when she enters the house because she does not have treats.
Well, I don't think you can present any evidence to show she is wrong. Behaviorists believe that children and any human being acquire language through conditioning - you present them with a condition under which they learn a certain language. Since this woman is a behaviorist, I don't see why she is wrong in believing what she does.