Thursday, 28 March 2019

What is the mystery of Easter Island?

                    




The easter island is located in the middle of the Pacific, 3540 km west of Chile. His monumental statues have made him famous. Carved with stone axes, these statues are the work of a people who came by boat from South America or Polynesia and who left the island a long time ago. It is thought that the statues were erected after the year 400. We do not know what they were intended for: it is the mystery of this island.
During a war in the 18th century, many of them were broken.

Monday, 25 March 2019

why do we yawn ?

                                                      why do we yawn ?




yawn seems to be the way the body uses to bring more oxygen to the brains , when we yawn we inhale slowly and deeply, then we will expire, we yawn especially when we are tired or bored. refreshing your face can help stop yawning it is impossible to hold back a yawn and the animals are yawning too








*learn more:

  • babies' lungs are pink. it darkens as we get older because the air we breathe is dirty
  • In the rest we inhale and exhale about 500 cm3 of air 13 times per minute. 
  • the lungs of an adult man have an average capacity of 6 liters
  • those of a woman 4.5 liters
  • in ancient times people believed that the soul and the breath were the same thing

what are salamanders and newts?


                                   what are salamanders and newts?  



They are amphibians with a long cylindrical body, a long tail and two pairs of legs.
Salamanders are normally larger and spend less time in the water. They are often confused with lizards, but their rounded heads and smooth skin contrasting with the pointed head and scaly skin of lizards, are a great way to differentiate them





Salamander








 Newt


The dodo




This bird, unable to fly, lived on Mauritius in the Indian Ocean. 
Dodos were not afraid of humans, so sailors could easily catch them and fill their boats with meat. 

On the islands, there were no big predators to threaten the birds and they did not need to know how to fly. So when sailors landed with cats and rats, the dodos were lost in advance. Survivors who do not fly, like the ostrich, have defenses: powerful legs to escape or to hit the enemy

Who was Davy Crockett?

                            

   Davy Crockett was born in Tennessee in 1786. In his youth, he spent most of his time in the mountains, hunting bears and fighting the Indians. He later became a politician and was elected to the United States Congress. 

In 1835, defeated in elections, he went to Texas to help the inhabitants of this region in their battle for independence (Texas belonged then to Mexico). 


In 1836, during the famous battle of Fort Alamo against the Mexican army, Davy Crockett was one of the 200 defenders killed                       

Sunday, 10 March 2019

Who reached the North Pole first?

                           Who reached the North Pole first?


American explorers Frederick Cook and Robert Peary both claimed to have been the first to reach the North Pole, Cook in 1908 and Peary a year later. In fact, it is possible that they have turned back the road before having reached the North Pole. The first person who really reached the North Pole was the American explorer Richard Byrd with his co-pilot Floyd Bennett, flew over the North Pole on 9-May-1926 
The first to travel across the ice to the North Pole is Ralph Plaisted, Arrived there on April 19- 1968.