Activity for PrimarySecondary
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
How would an ecosystem based around chemotrophs produce oxygen? Outline A planet which is heated tidally by its Brown Dwarf parent and permanently dark needs to have native alien life which has [somewhat similar biochemistry to Earth] and also be [permanently habitable] by Humans without [extensive life support] and/or [extensively genetically engineered] bodies... (more) |
— | almost 7 years ago |
| Question | — |
How would an organism live without blood? Assume Earth biochemistry, a thicker atmosphere (1.7 atm) with 22% oxygen and 0.6g. (not sure if conditions really matter, though) How would a lion-sized, quadruped, land-based, intelligent predator without any sort of flowing-fluid nutrient/oxygen transportation medium survive? (more) |
— | almost 7 years ago |