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The method of financing the Social Security system until 1983 is best described as
Fungal Cell Walls
The rigid structure surrounding the cell membrane of fungi, composed primarily of chitin and glucans.
Chitin
A long-chain polymer of N-acetylglucosamine, a derivative of glucose, and is a primary component of cell walls in fungi and exoskeletons of arthropods.
Cellulose
A complex carbohydrate that is composed of glucose units, forming the primary structural component of plant cell walls.
Mycorrhizal Partnership
A symbiotic association between a fungus and the roots of a plant, helping the plant absorb nutrients from the soil more efficiently.
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