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.
What is Cash Crop Farming? Cash crop farming is for profit. Also called commercial farming and cash cropping, it is a farming venture in which cash crops are grown. Cash crops are those which are produced for the purpose of generating cash or money. The products are therefore intended to be marketed for profit. Individual farmers just naturally grow cash crops as a livelihood and to generate cash for the family's needs. An extra profit is needed to fund the next cropping activities. The farming methods employed differ from farmer to farmer and from country to country.