In the human body, a series of chemical reactions results in the making of energy that is used at both the cellular and organismal levels. in which course would a person most likely study these chemical reactions?
biochemistry
geochemistry
materials chemistry
physical chemistry

Biochemistry i believe

The answers is bad germs in their

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

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