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
In mutualism, both organisms benefit. In commensalism, one benefits and the other is unaffected; in parasitism, one benefits and the other is harmed. Some of these relationships are so close that we speak of the composite of two species as one unit; for example, we speak of the composite of algae and fungi as lichens.n commensalism, one benefits and the other is unaffected; in parasitism, one benefits and the other is harmed. Some of these relationships are so close that we speak of the composite of two species as one unit; for example, we speak of the composite of algae and fungi as lichens.