21. Explique claramente como el fenotipo es el que favorece o desfavorece los resultados productivos obtenidos tanto en las explotaciones agrícolas como en las explotaciones pecuarias.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

The higher the astm grain size number, the finer the gran is. a)-true b)-false