that makes shoes completely waterproof., Researchers have developed a substance, for scientific research., The government has cut funding, that he would have to repeat the experiment., The scientist concluded, the analysis of blood samples., One part of her job is carrying out, science teachers., Schools currently do not have enough, are being analysed in a laboratory., Samples of water from the river, but they got the same results., They used different methods of calculation,, so they had to wear masks., A toxic gas was released during the experiment,, as soon as it cooled., The liquid became a solid

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