Bloating, belching and intestinal gas: How to avoid them. Bloating, belching, gas and gas pains can be embarrassing and uncomfortable. Here's what causes these signs and symptoms â and how you can prevent them. Bloating, burping and passing gas are natural and are usually caused by swallowed air or the breakdown of food through digestion.
1 Tyrannosaurus rex was one of the largest meat-eating dinosaurs that ever lived. 2  Everything about this ferocious predator, from its thick, heavy skull to its 4-foot-long (1.2-meter-long) jaw, was designed for maximum bone-crushing action.
Whereas the smaller, meat-eating dinosaurs would have been more comparable to some of today's larger birds, to which they are closely related. The largest and best-preserved T. rex, in the Field Museum of Chicago, is thought to have lived to almost 29 years, although it would have achieved adult size after 20 years.