If you have earned income, which of the following retirement devices must you contribute to, by law?
a. ira
b. pension plan
c. social security (fica)
d. vesting plan

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.