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.

Amanda reiss was injured at a wedding reception at a private home. amanda tripped over a piece of rebar that was sticking from the end of one portion of a sidewalk leading to the front door. amanda's lawyer believes that the homeowners were aware of the rebar problem and that other guests to the home had tripped over it but not been injured. how can amanda's lawyer get the information about the homeowner's knowledge? a. he cannot because they are not required to talk with amanda's lawyers b. he can depose the homeowners c. he can depose others who have been guests d. both b and c

Which nims management characteristic involves using standardized names and definitions for major organizational functions and units?

The red arrow shows the direction that wind from the south pole would travel if earth were not spinning. the wind's destination is at point a. because earth is spinning in the direction shown by the blue arrow, the coriolis effect will cause the wind to terminate closest to which point?