Well when cold dry air and warm humid air collide and the warm air rises through the colder air and that forms an updraft. When that hits the ground a tornado is formed.
unfortunately, Yes they do.
Well how do we affect them?
Global warming. Humans burn fossil fuels and releases huge amounts of carbon dioxide into our atmosphere and the warmer it is the more tornadoes we have.
Tornadoes are rapidly rotating column's of air, right?
Yes! And they usally occur in tornado alley which is the great plains. And they can happen at any time of the year.
How many tornadoes does America get?
About 1,000 a year.
Well what can humans do to lower the amount of tornadoes?
Well humans can cut down on how many fossil fuels we burn. I hope you learned a bit more about tornadoes.