Which of the following statements is false? a. scientists can date any radioactive material back only three half-lives; after this there's not enough parent material left to measure. b. carbon-14 dating is used to date material that was once alive and has not been petrified. c. isotopic dating can be used only in a closed system, where neither parent nor daughter material has escaped. d. isotopic dating of igneous rocks tells you when the magma or lava cooled to a solid. e. the "radiometric clock" starts when a radioactive mineral cools below its closure temperature.

How did the kansas-nebraska act contradict the missouri compromise?

Compared with the executive and legislative branches

On the doctoral journey, you will need to adjust your thinking and perspective. it is inevitable that your world view will be challenged. how you respond to those instances of challenging remains in your control. this may sound daunting and even seem to be unacceptable, but it is the inexorable result of engaging in "deep thinking" while becoming an academic. remember, you are not just becoming a researcher, but you are also becoming a learned person (an academic) who will be charged with the responsibility of acting as a gatekeeper of knowledge and knowledge development. what distinguishes an infant academic from a mature academic? explain. how does the above biblical challenge to move toward mature thinking parallel the increased responsibility for knowledge and knowledge development that comes with the earning of a doctoral degree? explain.