The hard evidence of this pattern submerges beyond the cellular level of the biological hierarchy, hidden by the great complexity of its productions, and is not seen again in concrete form until it reappears at the species level in human thought, both ancient and modern, and in certain aspects of the astrophysical realm. The second biological level of organization is that of the multicellular organism. The pairing function here is cell division. If new cells adhere to the old, and later differentiate, we have the basis of multicellular organisms and specialized tissues. The third column at the organism level is the crisis stage which must be resolved by mutualistic interaction, or the sharing of differences.
Some cells can use the waste products of others, while other interactions are mutually beneficial.
Differing cellular specialities can be joined to create a new way of coping with the environment to the benefit of all. Swapping of genetic information between cells can harmonize the whole aggregation to a new unitary and adaptive stage. Whether this process involves the different abilities of unrelated cells, or activating and repressing different parts of the same rich genetic base, the method and result are equivalent from our point of view. In either case a multicellular organism is created following the Land dynamic. The organ systems of these creatures are strictly analogous in function to the cellular organelles of the preceding level.