Describe the patterns of air density & pressure changes within layers of the atmosphere.

Temperature decreases as altitude increases in the troposphere, increases as altitude increases in the stratosphere, decreases as altitude increases in the mesosphere, and finally increases again as altitude increases in the thermosphere.

Explanation:

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