Gap Fill - Level 2

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   coating      daily      easily      everyday      many      military      nature      overall      safer      sewing      silk      squid      squid      themselves      thin      time      together      water      way      webs  
Humans have learnt things from that help us in our life. The latest thing is self-repairing clothing. Scientists have developed a for cotton, linen and wool clothes to repair , without the need for . Scientists from the Naval Research Office and Pennsylvania State University in the USA looked at how can cling on to things so well. They found a protein in the teeth that cover the suckers on a . The protein is like the one found in the that spiders use to make spider . It is very strong and stretchy.

The new protein is now part of a , which is put on clothes. A rip or tear in clothes joins in less than a minute after it is dipped in . This could be useful for and survival clothes. People will be with clothes that repair quickly and . A scientist spoke about the invention. He said: "The coatings are , less than a micron, so they wouldn't be noticed in wear." He added: "Even thin, they increase the strength of the material. For the first , we are making self-healing textiles."

Try the Level 3 gap fill.

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