1 Place the insertion point where you want the cross-reference to appear. 2  On the Insert menu, click Cross-reference. 3  In the Reference type list, select Footnote or Endnote. 4  Select the footnote or endnote that you want to refer to, and then click Insert.ow to Create Multiple References to the Same Footnote. 1  Place the insertion point where you want the cross-reference to appear. 2  On the Insert menu, click Cross-reference. 3  In the Reference type list, select Footnote or Endnote.
â¢ Parasitism: a relationship in which one species benefits while the other is harmed. â¢ Commensalism: a relationship in which one species benefits but the other species is neither harmed nor helped. We often represent mutualism with a â+/+â because both species receive a posi - tive benefit. Commensalism is shown as a â+/0â relationship because one species
1 The relationship between two different species of organisms that are interdependent; each gains benefits from the other. 2  A relationship between different species where both of the organisms in question benefit from the presence of the other.ymbiosis. 1  Anton de Bary's original definition says: a long-term relationship between two different species. 2  To this can be added, mutualism, (benefit for both), commensalism (benefit for one neutral for the other) and parasitism (benefit for one, costly for the other).