The movement of earth's tectonic plates is related to a. cycles of sunspots. b. movements of materials in the mantle. c. phases of the earth's moon. d. seasonal changes in weather systems.

B. The movements of materials in the mantle.

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)