div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 8button div class=ts-image amp-img class=ts-thumb alt=Page 8: Frontiers of Plant Science 4 linked to sewage treatment and sewage disposal Years ago sewage was untreated and was frequently emptied raw into streams Today this practice is rare src=https:reader031vdocumentsusreader031viewer20220118015b092df97f8b9a93738d755ehtml5thumbnails8jpg width=142 height=106 layout=responsive amp-img divdiv