Thursday, 3 July 2014

Why does a zebra have stripes?



Why does a zebra have stripes?

Some people believe that a zebra’s stripes act as a sort of camouflage, making individual animals hard to spot. But now scientists think there are other reasons for the stripes. They may dazzle lions and other cats which attack the zebra. Or they may help the members of a zebra herd to recognize each other.

Wednesday, 2 July 2014

What are turtles and tortoises?



What are turtles and tortoises?
 
Tortoise

Turtle








Turtles and tortoises are reptiles. Their bodies are encased in hard shells. The shell of a turtle or tortoise is made up of a number of bony plates that lock together. Turtles and tortoises have no teeth, unlike most reptiles. Instead they have sharp, horny beaks. Tortoises are land – dwellers. They have rounded shells like domes and well – developed legs. The biggest are the Galapagos tortoises which can grow as large as one and a half metres in length. They are found only on the Galapagos Islands in the Pacific Ocean.