What are the three routes of elimination of toxic substances in you? a. "liver, kidneys, lungs" b. "skin, heart, eyes" c. "sweat, nails, teeth" d. "liver, eyes, nose"?

The correct answer is option (a) that is liver, kidneys, and lungs.

Liver withdraws toxic components, which have been ingested, removes toxic metabolites and waste products resulting from putrefaction and intestinal fermentation.

The kidneys removes toxic drugs and other chemical components, by filtering them out of the blood and removing them in the form of urine.

Lungs basically eradicates toxins in the form of carbonic gas.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."