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Originally Posted by inavalan
.The earthly duality has its reasons.
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Yeah it is called bio-diversity.
Some species of geckos are only female and the reproduce clones of themselves ergo no sex and no biodiversity within that species.
They run a greater risk of one kind of detrimental wiping out their whole species because they are all identical.
With sex ergo biodiversity less chance of any one kind of organism taking out biological species.