When you finish a problem, you should confirm that it makes sense and explain it if it does. suppose you are grading a question in which students are asked to calculate the lifetime of the sun. a student has submitted an answer of "10^−10 seconds." which of the following would be the best response to give this student when you grade this question? (a) incorrect. your answer does not make sense, because it does not have appropriate units. (b) correct. however, you should have included a sentence explaining your answer. (c) incorrect. you must have used the wrong sign for the exponent, since the lifetime of the sun is 10^10seconds, not 10^−10seconds. (d) incorrect. you are close, but i think you meant "years" rather than "seconds. (e) incorrect. your answer does not make sense, because the time is way too short.

What was the main purpose of one of the first world organizations

Aresearcher conducting behavioral research collects individually identifiable sensitive information about illicit drug use and other illegal behaviors by surveying college students. one of the subjects is in an automobile accident two weeks after participating in the research study. is this an example of an unanticipated problem that requires reporting to the irb? yes, this must be reported because it was not listed as a risk of study participation in the consent form (was unexpected) and the subject experienced harm.yes, this must be reported because it involved a subject in a research study and it’s up to the irb to determine if it was related to participation.no, this does not need to be reported because it was assessed by the researcher as unrelated to the research study.no, this does not need to be reported to the irb since the researcher reported it to the sponsor of the study.

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.