If snow falls at a rate of 1 mm every 6 minutes, then how many hours will take for 1m of snow to fall

100 hours. 

We can find this by first finding the number of minutes it would take for a meter of snow to fall. Since there are 1000mm in 1m, we can multiply that unit rate by the number of minutes. 

1000*6 = 6000 minutes.

Then we have to find the number of hours since this is what the question is looking for. So, we'll divide the number of minutes in an hour 60. 

6000/60 = 100 hours.