Identify the statement that is true about radiometric dating. choose one:

a. dating of metamorphic rock tells when the high temperatures of metamorphism cooled below the closure temperatures of the minerals involved.

b. it can be used only if some uranium is present in the rock.

c. dating of an individual sand grain in a sandstone accurately dates the sedimentary rock's formation.

d. it can begin only when the isotopes heat up enough to decay.

How have your life experiences, opinions, and so on influenced you as an audience member? do you think that these experiences and opinions affect how you see or interpret a film or play? why or why not? support your answer with specific examples. your response should be at least five sentences. use complete sentences and offer evidence to back up your opinion.

Which of the following methods could be considered a "best practice" in terms of informing respondents how their answers to an on-line survey about personal information will be protected? respondents are informed that investigators will try to keep their participation confidential; however, confidentiality cannot be assured.respondents are informed that a research assistant will transfer all the research data to a password-protected computer that is not connected to the internet, via a usb flashdrive. the computer is located in a research team member's office.the investigator uses the informed consent process to explain her institution's method for guaranteeing absolute confidentiality of research data.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed.the investigator uses the informed consent process to explain how respondent data will be transmitted from the website to his encrypted database without ever recording respondents' ip addresses, but explains that on the internet confidentiality cannot be absolutely guaranteed

Which features are created on the exterior of a volcano when it erupts? check all that apply. vent crater hot spot lava flow boundary