If we had the jumping ability of a flea, (I assume you mean scaled up to human size), we would be able to jump metres up into the air. If a flea can jump over 30 times higher then its own body height, imagine a human doing the same.
Fleas can jump over 80 times their own height, the equivalent of a 6 foot tall human jumping over a building 480 feet (more than 1 and a half football fields)high!
If fleas were the equivalence to the size of humans, they would be able to jump over 480 feet into the air!
100 feet
skyscraper
Nothing would happen. Humans ARE animals.
They would die.
Someone would have to invent them
we would die
The same thing that would happen to humans if we had no food.
Nothing will happen but why would you want to do this.
then you would not even be here
we would not be able to walk
i think that there will be no humans on earth
we couldnt see
Many would die.
we would all be eaten by flies