Plant and Soil, Vol. 192, No. 1 (May (I) 1997), pp. 37-48 (12 pages) The chemical barrier to root development existing in the subsoils of acid soils is a subject of increasing interest. In order to ...
Science presenter Jon Chase uses universal indicator to measure the pH of a solution. The pH of the oceans is slightly alkaline but the increase in carbon dioxide in the atmosphere is acidifying them.