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Protease inhibitors (PIs) are widely distributed in plants and animals, and have a variety of functions, which include preventing digestion of seeds by insects and modifying blood …

A friend in need... A bizarre house... A terrible secret... Who will survive the Troll? An urgent message sends Steve rushing to the home of his old friend Tom Howard. He expects …

Specially built for Foundation and Key Stage 1 guided reading

"e;A paleontological odyssey that manages to be informative, witty, educational-and enormous fun."e; -Simon Winchester, author of The Map That Changed the World, Krakatoa, …