I'm not a purist to the point of wanting to cut down non-native trees or whatever - I'm a pragmatist, and I think we need all the trees we can get!!
I live in a suburb with a lot ofwell-established exotic trees, which provide desperately-needed shade in our hot, dry summers, as well as nesting sites for birds and possums. Naturally they also convert carbon dioxide into oxygen without which we humans could not live. It would take at least 3 decades to grow replacement trees, which is simply not practicable.
We should be replacing diseased or dangerous exotics with indigenous species of course, but councils aren't even doing that.
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