Why does brain size not matter when comparing the intelligence of different species while having bigger organs like hearts, lungs, kidneys allows those organs to function better?

Question

Why does brain size not matter when comparing the intelligence of different species while having bigger organs like hearts, lungs, kidneys allows those organs to function better?

In: 5

Answer 1

I’ll stick to lungs, but the concept applies to other organs as well. The primary function of the lungs is to exchange CO2 for O2. This is a physical process, so the more space available, the more exchange that can take place with each breath.