Secure babies experience almost no distress when they are left alone by their mothers

What percentage of school-aged children in the United States receives special education or related services because of learning disabilities?

A) 1 percent B) 5 percent C) 7 percent D) 13 percent

The inside of each resting neuron in your brain has an electrical charge of how many millivolts at the axon?

a. - 5 to -10 millivolts b. -20 to -40 millivolts c. -60 to -70 millivolts d. -90 to -110 millivolts