Write wath people can make of these meterials. Materials Mr Black

Think of rubber and you probably think of elastic bands, car tires, or pencil erasers. But this super-stretchy material actually finds its way into tens of thousands of different products—everything from rubber stamps and waterproof shoes to surfing wetsuits, swimming caps, and dishwasher hoses. Rubber, which has been commonly used for over 1000 years, once came entirely from natural sources; now rubber products are just as likely to be made artificially in chemical plants. Thats largely because we cant produce enough natural rubber to meet all our needs. And that, in turn, is because rubber is so fantastically useful. Lets take a closer look at one of the worlds most amazing materials!