All food contains the element carbon. On a path more food related all foods do have calories but there is nothing specific beside carbon that all food do contain.
All food does contain nucleic acid, as that is the basis of DNA, which is in all living things.
A1: No plants contain chlorophyll in order to make food. Not all plants contain chlorophyll. Plants which contain chlorophyll, contain it in order to breathe. A2: plants do use it to breathe but plants also use it to help them make food.
All food has water because all resources of food have water in them.
All of the food groups contain healthy foods.
All food contains hydrogen.
In variable amounts, yes.
food such as bacon, ham and salami and sausages all contain pork.
No, not all food contains all the nutrients.
Yes, all organic substances contain carbon
Yes. All food contains hydrogen.
Practically all foods contain water.
Yes. All food contains carbon.