During a typical morning, daniel will check the clock more frequently as the time for his regularly scheduled lunch break approaches. in this case, daniel's clock-checking behavior is reinforced on a schedule. a. variable-interval
b. fixed-ratio
c. fixed-interval
d. variable-ratio

List things you can lose your license for if you are under 21

Which of the following is also referred to as "swayback"? a. kyphosis b. scoliosis c. lordosis d. none of the above

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).