Spiders use ..... to weave their webs. This substance is a milky-type liquid that is released from a gland and changes into hair-like strands when it comes into contact with the air.

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Spiders use ..... to weave their webs. This substance is a milky-type liquid that is released from a gland and changes into hair-like strands when it comes into contact with the air. (*) silk (*) sap (*) mucus (*) urine

This is a companion discussion topic for the original entry at https://english.best/questions/18861,spiders-use-___-to-weave-their-webs-this-substance-is-a-milky-type-liquid-that-is-released-from-a-gland-and-changes-into-hair-like-strands-when-it-comes-into-contact-with-the-air/