Today Over Two-Thirds of the U

question 32

Essay

Today over two-thirds of the U.S.work force is employed in producing and delivering services,not products.In a brief essay,explain the reasons for this trend.

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Definitions:

Oxygenated Blood

Blood that is rich in oxygen and is carried from the lungs to the heart and then distributed to the rest of the body.

Hepatic Portal Veins

A vein that carries blood from the gastrointestinal tract and spleen to the liver, transporting nutrients and toxins to the liver for processing.

Superior Mesenteric Vein

A large vein that drains blood from the small intestine, ascending colon, and part of the transverse colon into the portal vein.

Amino Acids

Organic compounds that combine to form proteins, acting as the building blocks of life.