Sohn, Emily. iScience readers.

"A"--Spine

iScience puzzle -- Discover activity -- How can you describe trees? -- What do trees need? -- What can hurt trees? -- Why do trees have roots? -- How does a tree grow? -- Science at work -- Connecting to history -- Solve the iScience puzzle -- Beyond the puzzle

"Describes what different kinds of trees need to survive and explains that plants, animals and even humans need trees to survive. As readers use scientific inquiry to learn about what makes each kind of tree unique, an activity based on real world situations challenges them to apply what they've learned in order to solve a puzzle"--Provided by publisher