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Macintosh Picture Format  |  1996-09-10  |  186.9 KB  |  640x310  |  8-bit (213 colors)
   ocr: 11 air and light or in consequence of a shortage of available nitrogen,phosphorus 15) 6 and other essential elements. These elements are relatively scarce and must be recirculated 16 again and again to construct the food and the body tissue of living organisms. During the 13 warmer seasons, a majority of the floor 2) 10) population, particularly the bacteria and fungi, engages in round-the- clock feeding that decom- poses the forest debris and liberates its component chemicals. The chief contribution of the floor animals to this decomposition is the tragmentation of the debris, a process that ...