Type 0

A Type 0 or K0 civilization extracts its energy, information, raw-materials from crude organic-based sources (i.e. food/wood/fossil fuel); pressures via natural disaster, selection, and societal collapse creates extreme (99.9%) risk of extinction; it is capable of orbital spaceflight; in fiction, societies that fail to improve social conditions, environmental and medical understanding concurrently with other advancements, frequently accelerated their own extinction. 21st-Century Earth is a Type 0 civilization.

Detail
Energy usage: 106 W to 1016 W, Unaided Metabolic to Fission

Estimated Population: Up to 10 billion people (1010)

Existence is in 3d (conceptualized 4d) and 1r (reality)

Travel: Up to interplanetary space travel

Quality of life (government): Tribal, Theocracy, Monarchy, Democracy

State of forms: single, biological

WMD scale: nuclear fission and nuclear fusion

Longevity: 35-100

Social issues: Colonization, Religion, Automation, Air pollution, Use of biotech and gene manipulation

Industrial revolutions: Agriculture, Industry

Computing: kiloscale (103) in early computers, to zettascale (1021) in global weather prediction.

Arguments: Gender, Race, Class, Religion

Dominant proliferation: ordinary biological reproduction

Social weakening: famine and disease without proper mitigation capacity (solution: biotech agriculture and medicine)

Social dream: Global cultural dominance

Class system: Proliferated by current ruling class with heuristics (e.g. consent of governed) to allow coordination