All the options above can result from economic specialization. The correct option is the last one.
A connective tissue disease is any disease that affects the parts of the body that connect the structures of the body together. Connective tissues are made up of two proteins: collagen and elastin. Collagen is a protein found in the tendons, ligaments, skin, cornea, cartilage, bone, and blood vessels. Elastin is a stretchy protein that resembles a rubber band and is the major component of ligaments and skin. When a patient has a connective tissue disease, the collagen and elastin are inflamed. The proteins and the body parts they connect are harmed.
Amniocentesis detects abnormality in chromosomes, genetic disorders, and neural tube defects. Trisomy 21 (Down syndrome) is the most common chromosome abnormality.
The answer is A. Sandals don't really help with traction and it's a very good way to get like. A tapeworm or something. But yeah the answer is A.
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The answer is C: playing video games
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