To convert mph to km/h, multiply by 1.6 calculate in km/h the speed of a train traveling 75 mph? ?

120.701 km/h is the speed of the train,
so your method/conversion amount is correct 

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.

If you get a map and put the countries a states all together it forms all one piece you can also tell because of the earth quakes