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One little known fact: city trees are often all male b/c the female ones often smell bad and produce fruit that rots and attracts pests. However, female trees vastly reduce air pollen (via pollenators). Some think that doing this leads to pollen saturation and more allergies.
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I sometimes wonder if there are big, invisible messed up consequences of human sex selection forces on domesticated species in human environments… pets neutered and spayed, farm animals and plants existing in gross gender imbalance, etc
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My guess is the pollen is not from the tree (no flowers), it's just settled there from other plants. My porch we gets covered in an insane amount of yellow pollen like this every spring.
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considering pollen is analogous to sperm but airborne one would deduce there's a darwinian advantage to manufacturing as much of it as you can manage
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