Why is vulnerability to toxins so low during the germinal stage?
A) The functioning placenta cleanses the mother's blood of environmental toxins.
B) The mother's body produces antibodies to most environmental toxins.
C) Organogenesis is already complete prior to the germinal stage.
D) The embryo is not yet connected to the mother's bloodstream.
D
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Which schedule of reinforcement tends to get the highest response rate?
a. fixed interval b. variable ratio c. variable interval d. fixed ratio e. contiguous-continuous
You come to an intersection here the traffic lights are all malfunctioning. In order to make sure that everyone gets where they are going, a police officer is directing traffic so that as cars come into the
intersection they are sent to their correct destination safely. This is very similar to what the __________ does, as it directs sensory information to the correct part of the cerebral cortex. a. thalamus b. hippocampus c. amygdala d. reticular formation