How severe are the symptoms and how long do they last? How long the symptoms last and how severe they are depend on your lifestyle before making a change and how quickly you make a change. If you have a diet heavy in red meats, for example, and become a vegetarian overnight, you might have severe symptoms for a time.
The largest officially registered walleye ever caught had a length of 35 inches and had a circumference of 23 inches. The fish weighed 19.3 pounds.
The Son Doong Cave in Vietnam is the biggest cave in the world. It's over 5.5 miles long, has a jungle and river, and could fit a 40-story skyscraper within its walls. But nobody knew any of that until about six years ago.