Activity for lea
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Can one humanoid species evolve to live at an altitude where another, similar species could not survive? It seems that people who live at very high altitudes have demonstrably "thicker" blood, highly concentrated with red blood cells to overcome the low concentration of oxygen in the air. Moving between extremes of altitude apparently needs to be done gradually for the same reason. Assuming a biology ... (more) |
— | about 10 years ago |