. 250 grams of Carbon-14 decomposes for one half-life (5,700 years). How much Carbon-14 would remain after this period of time? Pls answer i Need To finish Fass Its a test LOL

Journey stations were established throughout the mongol empire every miles.

What is a person called when they are on your side and supports you

Which of the following studies is linked most directly to the establishment of the national research act in 1974 and ultimately to the belmont report and federal regulations for human subject protection? a. the public health service tuskegee study of untreated syphilis in the negro male. b. stanford prison experiment (zimbardo).c. tearoom trade study (humphreys).d. the harvard t3 study.