Trees are among Earth’s ultimate overachievers: they build massive bodies out of thin air, pumping water skyward with pressures that’d make your arteries pop, and wrap living “cables” of xylem and phloem in layers of dead wood. All the action happens in a hair-thin layer under the bark, where cells endlessly shuttle water, crank out indestructible timber, and juggle millions of metabolic tasks.
This ingenious setup not only lets trees reach towering heights but also explains their legendary resilience—and even whispers of biological immortality. They’re basically self-repairing skyscrapers that never forget to tend to their plumbing.
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