They Carry A Small Parasite That Attack Your Brain And Shut Down Your Body If Not Noticed Right Away Of Eating It. It Can Kill U Under 1 Week. So No They Are Not Poisonous But Carry A Parasite That Kills You. If Your Going To Eat Them Cook Them VERYCarefully. I Hope That Answered Your Questions
human saliva is not poisonous
No sugar and salt are not poisonous when taken together - if fact, they are very often eaten together in the normal human diet.
ussually food is eaten by a human
Iron is the least poisonous to human beings.
i dont think so, they'd propably get eaten! It is possible , but certainly not common .
Yes, it was used as a poisonous gas in World War I.
COWS eat grass and gets eaten by a human a hamburger
Humans are not poisonous.
yes
yes
no but it can cause infection
Sea lampreys are eaten by larger predators like sharks. However, the most common predator of these creatures are human beings.