They started with colonies, loose associations wherein each cell lived almost independently. Then, they engineered strongly bonded structures wherein each cell had specific responsibilities. This authorized the formation of intricate living systems, starting with plants.

Mosses were the first creatures that Eternons conceived for life on land. These tiny plants were forced to remain close by water because they lacked tubing and pumping systems. Such equipment was introduced in ferns, which could transport water from the ground to all their cells. Ferns spread to occupy vast areas.

Plants soon mastered the absorption and use of solar Eternons through the process we call photosynthesis. Eternons then focused on reproduction. They invented pollen to carry reproductive cells over long distances, flowers to capture pollen, fruits to nurture embryos, and seeds to feed the young until germination.

These were great achievements, but the real breakthrough was using plants as building blocks for more advanced structures. Plants would be entering other structures as food. Animals would be the eaters.