(Microorganisms Only) Nitrogen is a critical component in supporting plant-life, so microorganisms that naturally fix nitrogen in the soil offer a significant boost to plant support, but they are ineffective in thin atmospheres with little nitrogen.
This is quite a nice trait. You get support out of nowhere. If you can't place any more large-large-large microorganisms, mix in a couple of nitrogen-fixing traits here and there.
|Climate Adapted||Heat Adapted · Cold Adapted · High Pressure Adapted · Low Pressure Adapted · High Oxygen Adapted · Low Oxygen Adapted · Humidity Adapted · Aridity Adapted|
|Basic||Large · Small · High Metabolism · Low Metabolism · Exothermic · Domesticated · Beautiful · Poisonous · Invasive · Nocturnal · Delicate · Extremophile|
|Micro-Organisms only||Infectious · Nitrogen-Fixing · Airborne|
|Plants & Algae only||Cash-Crop · Fruit-Bearing · Deciduous · Photosynthetic · Flowering|
|Animals only||Social Behavior · Flying · Pair Bonding · Scavenger|