A certain signal molecule S in muscle tissue is degraded by two different biochemical pathways: when only Path 1 is active, the half-life of S is 20.s. When only Path 2 is active, the half-life of S is 101.s. Calculate the half-life of S when both pathways are active.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

i only know number one that’s a galaxy