Average height of a person
Try the one out: the average height of a person should equal the stretch of their arms from fingertip to fingertip.
Average Height of People
Over the last 150 years the average height of people in industrialised nations has increased 10 cm (about 4 inches). In the 19th century, American men were the tallest in the world, averaging 1,71m (5’6″). Today, the average height for American men is 1,75m (5’7″), compared to 1,77 (5’8″) for Swedes, and 1,78 (5’8.5″) for the Dutch. The tallest nation in the world is the Watusis of Burundi.
Average Person Laughs
The average person laughs 10 times a day!
Baby Sea Turtles
Only one out of a thousand baby sea turtles survives after hatching.
Bacteria that glow
The ocean floor is completely dark. Very few fish can live there. The black angler fish is one that does. It carries its own lantern to lure Prey into its huge mouth. Bacteria that glow in the dark make the light.
Helium Balloon Gas makes balloons float. Helium is lighter than air and just as the heaviest things will tend to fall to the bottom, the lightest things will rise to the top.
Bamboo grows faster than any other plant. It can grow nearly a metre (39.4 in) in one day – about the same as you grew in the ten years after you were born.
The term “bank teller” originated in the wake of the 1929 stock market crash, when banks began hiring low-paid workers to “tell” throngs of frantic depositors that their money was gone.
Desert Plant become fatter or thinner depending on the weather. When it rains the roots drink in the water and the tree stores it in the trunk. During the long dry season the tree becomes thinner and thinner as it uses up its store of water.
This snake and jellyfish live off the coast of Australia. The sea snake is the most poisonous snake in the world. Box jellies, sometimes called sea wasps, are the most poisonous jellyfish. Their sting can kill a person in less than 3 minutes.