Select ALL of the places you might find DNA evidence. saliva on gum
blood spatter on the wall
inside a femur bone found in the woods
cells on root of hair found at the scene

Inside a femur bone found in the woods,

saliva of gum

where is the circuit diagram ?

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.