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K-Gr 3—A fly, a worm, a grasshopper, and a family of ants live happily in a sunny vacant lot until the volume of trash reaches critical mass and a gang of rats takes over...
Gr 4—6—The first chapter of this attractive book, "The Stuff of Life," jumps right in by outlining the materials needed and the step-by-step process to follow to collect and isolate DNA by rinsing one's mouth out with salt water...