The  function of all B-complex vitamins is to 

A rich source of vitamin E is

The sun is an example of an external energy cycle

The disease associated with niacin deficiency is

An example of a meal high in vitamin C is

The thermic effect of food refers to the fact that 

The best food source of folic acid is

The provitamin form of vitamin A that is found in plant pigments is

The sum of basal metabolism, energy expended in physical activity, and thermic-effect of food is known as

The chemical name for vitamin E is