Although they vary in size, males are often as much as twice the size of their female counterparts.
View moreSeoul is noted for its population density, which is almost twice that of New york and eight times greater than Rome.
View moreThe oldest horse lived over twice as long than he was supposed to.
View moreJupiter is twice as massive as all the other planets in the Solar System put together.
View moreWhen it was first formed, Jupiter was much hotter and was about twice its current diameter.
View moreApple is so successful, it has twice the amount of money as the US.
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