When the diaphragm and rib cage muscles relax,

it is impossible to breathe.

inspiration occurs.

the chest cavity enlarges.

expiration occurs.

Which of the following requires the action of a first class lever in the body

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare

An example of maslow's need for safety is reaching goals through self-discipline