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 it legal to charge for tap water?

It seems like a sensible provision, but business is business and the law does not prevent charging for the use of a glass or for service. It doesn’t extend to filtered tap water. They can charge for that. But if they serve alcohol, they have to provide free drinking water, whether it’s filtered or unfiltered.

How fast does a rocket have to travel to escape the Earth’s gravity?

If you want to completely escape Earth’s gravity and travel to another moon or planet, though, you need to be going even faster – at a speed of at least 7 miles per second or about 25,000 miles per hour.

How long ago was the formation of the moon?

The moon was formed ~4.5 billion years ago, about 30–50 million years after the origin of the Solar System, out of debris thrown into orbit by a massive collision between a smaller proto-Earth and another planetoid, about the size of Mars.

How much does a gallon of 2 percent milk weigh?

This is because a gallon of milk weighs about 8.6 pounds, give or take, based upon whether it is whole milk (heavier) or skim (lighter). But for our purposes, the 8.6 and 11.63 are accurate enough.

Which country gives the UK a Christmas tree every year?

The Trafalgar Square Christmas tree has been an annual gift to the people of Britain by the city of Oslo each year since 1947 as a token of gratitude for British support of Norway during the Second World War.

Is a mongoose immune to snake venom?

The Indian gray mongoose and others are well known for their ability to fight and kill venomous snakes, particularly cobras. They are adept at such tasks due to their agility, thick coats, and acetylcholine receptors, which render them resistant or immune to snake venom.

Who wrote the first modern chemistry textbook?

Antoine Lavoisier (lah-vwah-ZHAY), 1743-1794, introduced quantitative measurement into the study of chemistry with his discovery of the law of conservation of mass. He discovered the role of oxygen in combustion and established the principles for naming chemicals. He wrote the first modern chemistry textbook in 1789.