The individual components of the beetle's defence mechanism provide no evolutionary advantage by themselves. It is only when the system is implemented as a whole that the beetle can achieve a useful trait. <ref>Bomby the Bombardier Beetle, by Hazel Rue, ISBN 0-932766-13-7</ref> | The individual components of the beetle's defence mechanism provide no evolutionary advantage by themselves. It is only when the system is implemented as a whole that the beetle can achieve a useful trait. <ref>Bomby the Bombardier Beetle, by Hazel Rue, ISBN 0-932766-13-7</ref> |