WHY DID DINOSAURS BECOME EXTINCT ?

 


       THE DINOSAURS FIRST APPEARED ON EARTH DURING THE TRIASSIC PERIOD.


TRIASSIC PERIOD.
 


THEY BECAME THE DOMINANT ANIMAL DURING JURASSIC PERIOD


JURASSIC PERIOD



BUT AT THE END OFF CRETACEOUS PERIOD,65 MILLION YEARS AGO,
THEY BECOME EXTINCT .








SCIENTIST STILL ARGUE WHY THEY DISAPPEARED. BUT MANY EXPERTS  NOW BELIEVE THAT AROUND 65 MILLION YEARS AGO,AN ENORMOUS ASTEROID STRUCK THE EARTH.



ASTEROID STRUCK THE EARTH.





THE IMPACT THREW UP A HUGE CLOUD A DUST,WHICH BLOCKED OUT SUNLIGHT FOR LONG TIME

LAND PLANTS DIED AND SO THE DINOSAURS STARVED TO DEATH.










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