How long did it take to build Hadrian’s wall?

How long did it take to build Hadrian’s wall?

It took about 14 years to complete Hadrian’s Wall. The largest structure ever made by the Romans. Hadrian’s Wall was built on the orders of the Roman emperor Hadrian.

Do salmon die after they spawn?

The salmon run is the time when salmon, which have migrated from the ocean, swim to the upper reaches of rivers where they spawn on gravel beds. After spawning, all Pacific salmon and most Atlantic salmon die, and the salmon life cycle starts over again.

Do cats meow to each other?

Jupiter’s moon Ganymede is the largest moon in the Solar System, and Ganymede as well as Saturn’s moon Titan are both larger than Mercury and Pluto. Earth’s Moon, Jupiter’s moons Callisto, Io, and Europa, and Neptune’s moon Triton are all larger than Pluto, but smaller than Mercury.

Which bird has the largest wingspan?

The wandering albatross has the largest wingspan of any living bird, typically ranging from 2.51 to 3.5 m (8 ft 3 in to 11 ft 6 in), with a mean span of 3.1 m (10 ft 2 in) in the Bird Island, South Georgia colony and an average of exactly 3 m (9 ft 10 in) in 123 birds measured off the coast of Malabar, New South Wales.

Was Captain Morgan a real person?

The face of the well-loved rum brand actually existed. He was a Welsh privateer who fought alongside the English against the Spanish in the Caribbean in the 1660s and 1670s. His first name was Henry and was knighted by King Charles II of England. His exact birth date is unknown, but it was sometime around 1635. He died in Jamaica in 1688, apparently very rich. He spent his final years drinking with his men, running his estates, and telling all his war stories.

How many electoral votes must a candidate win in order to win the presidency?

In order to become president, a candidate must win more than half of the votes in the Electoral College (currently that would be 270 of the 538 total electors).

How strong is a strand of human hair?

A single strand could hold 100g (3oz) in weight: the combined hair of a whole head could support 12 tons or the weight of two elephants. Weight for weight, it is not as strong as steel: more like aluminium, or reinforced glass fibres or Kevlar, which is used to make bulletproof vests.

How many different kinds of animals are there in the world?

According to World Book Encyclopedia, “So far scientists have named and classified more than 1 1/2 million animals. Over half of these are types of insects and other species are discovered each year. Scientists believe there may be from 2 million to as many as 50 million kinds of animals alive today.”