The combined actions of your brain , nervous system, muscles, joints and bones that allow you to do anything from holding a spoon to playing are called? a. athletic ability b. motor skills c. coordination d. balance

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.