When did the elephant bird become extinct?

When did the elephant bird become extinct?

Madagascar’s giant, flightless elephant birds were once a common sight on the island, certainly up until the 17th century. It is generally believed that the elephant bird’s extinction resulted from human activity, perhaps not surprising when one of their giant eggs would have fed an entire family.

Is there vitamin C in milk?

Milk is a good source of thiamin, riboflavin and vitamin B12 . Milk contains small amounts of niacin, pantothenic acid, vitamin B6, vitamin C, and folate and is not considered a major source of these vitamins in the diet. Milk contains the fat soluble vitamins A, D, E, and K.

When was the first motion picture with sound?

Vitaphone, as this system was now called, was publicly introduced on August 6, 1926, with the premiere of Don Juan; the first feature-length movie to employ a synchronized sound system of any type throughout, its soundtrack contained a musical score and added sound effects, but no recorded dialogue—in other words, it had been staged and shot as a silent film.

Why do cats eyes glow at night?

Cats, dogs, and many nocturnal creatures appear to have glowing eyes because the back of their eyeballs include a special reflective layer called the tapetum lucidum. This helps animals (cats in this case) see better in low light by working like a mirror on the retina to reflect the light back through the eyes.

Why is Cobb salad named that?

Various stories of how the salad was invented exist. One says that it came about in the 1930s at the Hollywood Brown Derby restaurant, where it became a signature dish. It is named for the restaurant’s owner, Robert Howard Cobb.

Why do you breathe in a paper bag when hyperventilating?

It accounts for approximately 25% of all cases of hyperventilation. The idea behind breathing into a paper bag is that you will begin to breathe in more CO2 than if you were inhaling normal air. This will then help bring your body’s pH back to a normal range.

Who was the youngest mayor in the country?

In the small town of Dorset, Minnesota, 3-year-old Robert Tuffs was elected mayor in 2015. The town elects a new mayor every two years by drawing names out of a hat. His political platform during the campaign was “being nice and no poopy talk.”

How many chambers does a human heart have?

The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.