Hepatitis B and C are spread through blood and body fluids. To cut your risk, don't share items like toothbrushes, razors, or needles. Limit the number of sex partners you have, and always use latex condoms. There's no vaccine yet for hepatitis C, but there is one for hepatitis B.
This gives their neck greater flexibility so they can turn it around to 270 degrees. They have to do this because, unlike us, they cannot move their eyeballs at all in any direction. <br /> Owls can't really turn their head all the way around. They can turn their head 270 degrees (3 quarters). Owls have fourteen vertebrae bones in their necks which is twice as many as humans. This gives their neck greater flexibility so they can turn it around to 270 degrees. They have to do this because, unlike us, they cannot move their eyeballs at all in any direction. Owls can't really turn their head all the way around.
The Strigidae owls are the typical owls or true owls, and this family includes the majority of owl species. They are heavily camouflaged birds and have large heads and round or oval facial disks. The Tytonidae owls, or barn owls, have more typically countershaded plumage and heart-shaped facial disks, and their body shape is a bit more tapered and slender than the true owls. Regardless of which family these birds belong to, however, they are always able to capture birders' interest.