Which of the following statements is true of cause and effect relationships? o a the effect occurs after the cause o b. the effect triggers the cause o c. each cause can have only one effect o d. each effect can have only one cause.

Consider the events in alfred wegener's life that led to his development of the continental drift hypothesis. review the items below and determine whether each item is (1) an observation that led alfred wegener to develop his continental drift hypothesis, or (2) evidence wegener gathered to support his proposal.