You can only throw up through your mouth+nose. So we do have 3 orifices that expel 3 different types of waste. You could even count 4 with the ear and wax. Tears?! Sweat?! lots of gross stuff
Because birds use more energy to convert toxins filtered by kidney to uric acid and pop that out to safe water.
Mamals convert it to urea which is then peed out, which looses the body some water, but requires less calorie.
Fish don't do that at all, they are basically constantly peing out whatever their kidney is filtering, which requires the least amount of energy but a constant supply of water.
ps.: the acid part in uric acid is why bird shit is so nasty to buildings and car paint etc. if it is not cleaned fast enough.
10 Comments
MissJinx@lemmy.world · 28 pts · 1y
You can only throw up through your mouth+nose. So we do have 3 orifices that expel 3 different types of waste. You could even count 4 with the ear and wax. Tears?! Sweat?! lots of gross stuff
sthetic@lemmy.ca · 21 pts · 1y
It would be funny if earwax could be expelled intentionally, by clenching our ears and extruding a big ol tube of wax.
i_dont_want_to@lemmy.blahaj.zone · 19 pts · 1y
MissJinx@lemmy.world · 6 pts · 1y
true, but also not every poop is intentional... accidents happen lol
Kolanaki@pawb.social · 7 pts · 1y
Boogers only come from the nose.
Tears only come from the eyes.
mrsemi@lemmy.world · 7 pts · 1y
Sphks@jlai.lu · 6 pts · 1y
And CO2.
HurlingDurling@lemm.ee · 9 pts · 1y
That's some good weed
Sunsofold@lemmings.world · 8 pts · 1y
Wait til you find out about the pilonidal cysts!
Matombo@feddit.org · 7 pts · 1y
Because birds use more energy to convert toxins filtered by kidney to uric acid and pop that out to safe water.
Mamals convert it to urea which is then peed out, which looses the body some water, but requires less calorie.
Fish don't do that at all, they are basically constantly peing out whatever their kidney is filtering, which requires the least amount of energy but a constant supply of water.
ps.: the acid part in uric acid is why bird shit is so nasty to buildings and car paint etc. if it is not cleaned fast enough.
sthetic@lemmy.ca · 1 pts · 1y
Thank you for your genuine and educational response!