As you see this is the mold which causes severe health problems infact one of the most dangerous mold is that Toxic black mold which cause respiratory, nasuea and other problems like skin etc. Also it causes cancer as well.
40 km = 24.8548 mi. There are 1.609344 kilometres in a mile. Therefore, rounded to two decimal places, 40 kilometres is equal to 40/1.609344 = 24.85 miles.
the answer is 40 because there are 60 minutes in an hour, and if u drive 30 minutes and u go 20 miles, then you have to do 30+30 to get 60, and then 20+20 to get 40! it is simple rlly, just write 40 as ur answer! hope this helps!