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Which of the following statements is true of chromosomes?

Allopatric speciation occurs when

This is a fixed area defended by members of a group against outsiders.

Give three examples of a child making an overextension. 

During conversations, older preschoolers begin to get master eye contact, pausing and listening, maintaining attention, and taking turns. These behaviors can me classified under:

If a child uses four or less than four word sentences, you’d suspect he is about 4 years old.

Discuss in a few sentences why so much of a preschoolers’ speech is unclear and may be confusing to a casual observer. 

The best thing about using impact words a preschooler may find is:

It is professional for a teacher to tell a child, “That kind of talk is unacceptable,” if the child’s words are socially questionable.

The child’s saying “Moo” when he sees a horse is an example of his use of pragmatic vocabulary.