Construct an explanation describing how forensic techniques have changed over time. Include thoughts on both collecting and submitting evidence.

More advancements such as advanced ballistics photography have changed how supposed murder weapons can be connected to murders. Shell casings found on the scene can be directly linked to a gun that may have the same firing pattern, barrel markings, and gun discharge. Explanation:

the answer to your question is c

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