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a layperson's questions about life and death
From what I understand (to save time let's agree that this qualification applies
to all of what follows), there are certain plants that have a finite lifespan built into them: they go to seed and then they die. (Incidental question: does such a lifespan always coincide with a single solar year?) Then there are animals, who have decrepitude built into them instead: it can't be put off indefinitely, and once it starts, it continues until the animal is too feeble to survive. Please comment on anything that's incorrect so far. My main question is: What about trees? I can't recall ever hearing of a tree that died of old age. They continue growing throughout their lives, but is there anything about perpetual growth that necessarily leads to death? (Incidental question: How does a tree's growth rate change over the course of its life?) Obviously something will get them eventually, just because life is a gamble and every lucky streak has to end. But, in principle, could a tree live forever? Any help greatly appreciated. Peace |
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