Natural Life
A planet with Natural Life has native animal and / or plant life. The creatures and plants can be cultivated and used as resources and form a stable ecosystem helping to stabilise the planet by means of the Gaia balance. Planets require natural life to get a Type I or II atmosphere and planets with natural life may construct new zones and upgrade them with Improved Production or Improved Augmentation for half the regular price.
When building a new system, a planet with Natural Life during system building gets the Improved Production upgrade on any zones located on that planet for free.
A planet can only gain Natural Life if it is Habitable.
Cost
The cost of Natural Life depends on the size of the world:
| World Type | Biomass cost for natural life |
|---|---|
| Small moon | 1  |
| Medium moon | 3 |
| Large moon, small planet | 7 |
| Medium planet | 19 |
| Large planet | 37 |
Note: The actual price is calculated per zone; the small moon entry displays the actual price per zone. This is relevant if you have other things that give you extra zones, such as the Underworld special.