There are 9,000 species of birds. 

 

 

 

Every species of birds lay eggs.  The egg is covered in protective shells.  The size of the eggs can be from 0.2 to 9 kilograms.  

 

 

 

 

Animals like flies are attracted to fruits or foods.  Bee stings can be very dangerous.  Mosquitoes are the most dangerous creatures on earth!

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