to landslide, even though earth movement was the most immediate cause). We therefore conclude that this is a case of multiple causation. B. We must now determine whether the deterioration or the fungicide manufacturers’ failure to warn is the “proximate efficient cause” of the damage to Berry’s irrigation pipes. In Sabella, the California Supreme Court defined “proximate efficient cause” both as “the one that sets others in motion” and as “the predominating or moving efficient cause.” Sabella, 27 Cal.Rptr. at 695, 377 P.2d at 895; see Garvey, 257 Cal.Rptr. at 296, 770 P.2d at 708 (“Sabella defined ‘efficient proximate cause’ alternatively as the ‘one that sets others in motion’ and as ‘the predominating or moving efficient cause.’”) (citations omitted); Howell, 267 Cal.Rptr. at 716 (<HOLDING>); Brian Chuchua’s Jeep, 13 Cal.Rptr.2d at 445
recognizing the existence of purely jurisdictional elements recognizing existence of two tests recognizing first two exceptions recognizing that the existence of an agency relationship is ordinarily a question of fact recognizing the existence of the special relationship