What part of the human eye has color?
retina
Pupil
Iris <- marked as correct
iridisicie
Actually the retina has a color as well, it's red, which is why albinos have red eyes.
What is the Worlds Deadliest Snake?
Blue Krait
Australian Brown Snake
Inland Taipan
Mohave Rattlesnake
This question can't be googled and it depends on the definition. (I got to caught up in reading about the snakes, so I forgot to answer in time, and don't know which answer is marked as correct)
The most toxic snake is the Inland Taipan, but they are docile and will only strike provoked, and all sources I have found states that there are no recorded human deaths from this snake. So not particularly Deadly.
Australian Brown Snake is more aggressive, but less toxic, than the Inland Taipan.
Blue Krait is also toxic but not particular aggressive so not that Deadly. 50% fatality even with anti-venom.
Mohave Rattlesnake, is not a candidate, still plenty of toxic though.
But neither of the 4 possible answers are particularly deadly, as you are unlikely to encounter them and if you do it is unlikely that you will be bitten. They have caused very few, if any, recorded deaths.
The most deadly snake is either the Indian cobra or Russell's viper, as they cause many more deaths, numbered in the hundreds per year. Many google hits, however, indicates that the most deadly snake is the Black Mamba.
As "most deadly" is in itself ambiguous, I suggest the question be changed to "most toxic" and we do have a clear winner.