Gap Fill - Snakes - Level 5

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   acid      discovery      huge      illnesses      nitrogen      reptiles      stones      tiny      urine      water   

Paragraph 1

The natural world contains a number of untapped remedies. The latest is from researchers in the USA. They believe their research into how excrete waste could help treat human . The scientists analysed "pee crystals" that reptiles use in place of to get rid of waste. The crystals are a solid form of uric . This is a by-product created when the body breaks down in food. It can be harmful. Too much nitrogen can lead to health problems like gout and kidney . Our bodies flush uric acid waste away when we pass .

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