Why is the U. S. Constitution called a “living document”?

Wind power has been beneficial to rachers ,farmers , and rural homeowners for decades windmills and turbines use wind power to change the winds kinetic energy into electricity where does wind power come from

Doing the text now can someone me

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.