3 ms·
The lines are drawn based on what biology we have available to us. If we ever discover alien biology, the lines might be drawn more broadly. But we don't know u
by goatlover 8y ago
The lines are drawn based on what biology we have available to us. If we ever discover alien biology, the lines might be drawn more broadly. But we don't know until then.
- hopler 8y agoIt's still a bit arbitrary. Why is the water cycle in a mountain/coud/river not a living process, but the ATP cycle in a cell is?