Causes of cirrhosis. Common causes of cirrhosis are long-term alcohol abuse, hepatitis B and C infection, and fatty liver disease. Of those, hepatitis B and C together are said to be the leading cause of cirrhosis (WHO).
Leatherbacks have downward pointing spines in their throat, which allows jellyfish to be swallowed, but prevents them from coming back up. Typical Lifespan: Leatherbacks reach maturity at approximately 13 to 14 years. Their average lifespan is unknown, but itâs thought to be at least 30 years. Habitat: Leatherbacks spend most of their lives at sea and sometimes look for prey in coastal waters.
The leatherback is the only sea turtle that does not have a hard shell. Instead, it bears a mosaic of bony plates beneath its leathery skin. It is the largest sea turtle, measuring 6 to 9 feet (1.8 to 2.7 m) in length at maturity, and 3 to 5 feet (0.91 to 1.52 m) in width, weighing up to 1,500 pounds (680 kg). Other species are smaller, being mostly 2 to 4 feet (0.61 to 1.22 m) and proportionally narrower. The origin of sea turtles goes back to the Late Jurassic (150 million years ago) with genera such as Plesiochelys, from Europe.