Why are square shapes rare in nature? I know some rocks/minerals can be square but mostly everything is curved , is there a biological reason why it’s hard for natural objects to have straight lines?
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There are probably a million little reasons why evolution avoids straight lines and flat faces. Chief among them is that living things generally grow outwards which doesn’t really lend itself to making geometric shapes. Blocky shapes would therefore be very inefficient. Shapes with edges have increased surface area per volume, which requires more energy to regulate your own temperature. Corners are structural weak points. Another big reason is that almost all living things move, and rigid structures are more likely to break under.
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