Spider silk is one of the strongest natural materials known. Spiders pro it a a liq inside th bodies, a it tu solid a they pu it o through sm openings called spinnerets. Some spiders can make several different kinds of silk, each with its own purpose. They use silk to build webs, to wrap their prey, and to protect their eggs. Scientists have long wanted to produce spider silk in large amounts, but spiders are difficult to farm because they tend to eat one another.

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