Julie’s cell phone is 9 centimeters long. how many millimeters long is her cell phone

The answer is 90, there is 10 millimeters in 1 centimeter! So, if there is 9 centimeters, there will then be 90 millimeters!

Ps: I had my question up but someone reported it since I added a picture that would help you! :( 

Hope this does help though! You can always do the jumping trick with meters! That's how I learned :) 

Answer is either b or c

The answer is biodiversity resulting from new ancestors.