Plz i need i will give u brainlest plz what do active solar heat systems have that passive systems do not have? a. fans and pumps b. tubes for conducing heat c. areas to collect sunlight d. solar collectors

well in order to answer this question you have to provide more information < 3

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