The placenta is like a

a. cargo vessel that collects and delivers supplies.
b. sentinel who watches for danger.
c. teacher who explains difficult concepts.
d. manager who supervises a staff of workers.

A

Psychology

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With respect to escape and avoidance, an _____ response is one that terminates an aversive stimulus, while an _____ response is one that prevents an aversive stimulus from occurring. Escape and avoidance responses are two classes of behavior that are maintained by ____ reinforcement.

Fill in the blank(s) with the appropriate word(s).

Psychology

Can children "grow overnight?"

a. no, it is not possible b. yes, but only during the teen years c. yes, but in childhood it is usually only girls that do d. yes, research seems to confirm this

Psychology