State whether the following are mistakes, systematic errors, or random errors. (a) Earth curvature..

State whether the following are mistakes, systematic errors, or random errors. (a) Earth curvature and refraction. (b) Imperfect centering over a point. *(c) Contraction of a tape due to a temperature other than standard. (d) Recording a length of 135.48 as 135.44. (e) Reading of the horizontal circle on a total station.