smell of freshly cut grass
... that the chemicals responsible for the smell of freshly cut grass are a plant defense mechanism?
... that the chemicals responsible for the <b id="mwAwk"><a href="./Smell_of_freshly_cut_grass" id="mwAwo" rel="mw:WikiLink" title="Smell of freshly cut grass">smell of freshly cut grass</a></b> are a <a href="./Plant_defense_against_herbivory" id="mwAws" rel="mw:WikiLink" title="Plant defense against herbivory">plant defense mechanism</a>?