10.1.2 Terrestrial Environments Proportion of different soil microorganisms in soil Othe organisms 0.2% Fungi% Aerobic bacteria Actinomycetes 70 13% Figure 25.12 The rela- Anaerobic tive proportions of various bacteria kinds of organisms found in 14% soil. "Other organisms"include such things as algae, protists, and virusesProportion of different soil microorganisms in soil 10.1.2 Terrestrial Environments