In AIDS patients, the low numbers of CD4+ T helper cells result in the inability of the body to fight these external aggressors. As a result, patients are more susceptible to diseases in the form of opportunistic infections and rare cancers. It is illness due to these life-threatening diseases that we call AIDS.
The esophagus is a tube-like structure which passes food in portions, to an organ known as the crop. The crop is an organ unique to birds. A crop's main function is to store food. It is like an extra fuel tank for the bird. The crop is located at the base of the neck and can be easily seen after a bird has just eaten. If the crop is large in size the bird is probably full. If the crop is deflated and has a flat appearance the bird has not eaten yet. The crop continuously supplies small amounts of the food to the stomach. The food passes from the crop to the stomach, the most active part of the digestive system of a bird. There are two parts to the stomach of a bird.
The majority of corn is used for animal feed, ethanol, starch products (used not just in food processing, but in manufacturing fuel filters, batteries, baby powder, sanitary napkins, and much more...), and sweetener. A 'cash crop' is something which is grown for the generation of capital. A 'non-cash crop' or 'subsistence crop' is grown for direct consumption by the producer, their family, or their livestock. The term 'food crop' is much more ambiguous, and cannot necessarily be differentiated from a 'cash crop'. Many 'food crops' (tomatoes, potatoes, asparagus, apples...) can actually be 'cash crops' if they are produced specifically for the generation of income through sale. Items that are highly perishable and difficult to process or ship tend to be used much more often as 'food crops' than 'cash crops'.