A see saw
I don’t know
The full riddle is:I go up but at the same time go down. Up towards the blue sky, and down towards the ground. I'm present tense and past tense too, so why don't you come for a ride, just me and you! What am I?The answer is: see-saw.
This sounds like the old riddle "What goes up a chimney down but can't go down a chimney up?" The answer is "an umbrella."
What goes up when rain comes down is an umbrella.
What may go down the chimney up but not down the chimney down?
Because it can.
an elevator
The sun.
Seesaw
By breathing your stomach goes up and down and also your heart is still moving.
The full riddle is:I go up but at the same time go down. Up towards the blue sky, and down towards the ground. I'm present tense and past tense too, so why don't you come for a ride, just me and you! What am I?The answer is: see-saw.
When supply increases and demand decreases, the price goes down. When supply goes up and demand stays the same, price also goes down. When demand goes up and supply either stays the same or decreases, then the price goes up
the updraft wind goes up and the down draft wind goes down
Stairs! right?
it goes up and down coapfhapdhf it goes up and down coapfhapdhf it goes up and down coapfhapdhf
inflation
age,temperature,time
If you throw a ball into the air it goes up reaches a peak then comes back down. The amount of time to reach the peak is exaclty the same amount of time for the ball to fall back down from the peak. So half of the total time of flight is where it peaks at max height. This is due to the uniform acceleration from gravity that slows the ball down on the way up to the peak at exactly the same rate that it speeds up on the way back down.