The carbon 14 isotope has a half-life of approximately select one: a. 1000 years b. 100,000 years c. 40,000 years d. 5,700 years e. 1,000,000 years

12which best describes how civil rights workers were treated during the freedom summer campaign? many workers were ignored. some workers were arrested or killed. some workers were treated well. o a few workers were warned to leave.-tshp---s1-mark this and returnsave and exitnextletvldoll