Mystery Surrounds Giant Insects: Oxygen Theory Weakens

Scientists used to think high oxygen helped giant dragonflies grow. A new study looks at their breathing and changes this idea. The research suggests a different reason for their size.

Researchers studied the dragonflies’ respiratory organs. They found evidence of a different system. This system likely helped the dragonflies get enough oxygen. The new analysis suggests that other factors, besides oxygen, played a role. This challenges the previous understanding of dragonfly evolution.

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