<span>The presence of insects at an incident scene involving blood is common. Flies that feed on blood at the scene produce small circular stains known as flyspeck which can be mistaken for alternative bloodstain such as expirated blood, also insects walking through a stain may spread the blood causing small additional stains.</span>
Hydrogen bonds between nucleotides
By the exact definition, such a craft is jet powered and ridden astraddle but a more general definition would be a small vessel, powered by an inboard or outboard motor or sail subject to the specific regulation for such craft.