True or false? most mental health care in the united states is delivered in psychiatric hospitals.

Convection is a type of heat transfer of thermal energy when a fluid, such as air or a liquid, is heated . Heat energy is transferred from hot places to cooler places.

The following statements best describe convection:

Convection occurs in liquids and gases.

Convection transfers thermal energy.

Convection occurs until all of the fluid is at the same temperature.