Final answer:
The possibility of retaking an examination after two failures depends on specific policies. In Biology, repeated experiments may not yield identical results due to various influencing factors. Predicting a final exam score requires more information about the scoring system and student performance trends.
Step-by-step explanation:
Whether a person can re-take an exam after failing it twice depends on the policies set by the educational institution or organization administering the test. Often, there are opportunities to retake exams, but there may be limitations such as waiting periods, additional fees, or required remedial coursework. It is important for the student to inquire directly with the relevant authorities to understand the retake policies specific to their situation. Tools like study guides, tutoring, and practice tests can significantly improve the chances of passing on the next attempt.
Regarding the experiments, if they did not yield the same results initially, repeating the experiment a third time may not necessarily produce identical results either due to variables not being controlled or inherent randomness in the system being studied. This is especially true in areas like Biology where many factors can affect the outcome.
To predict the final exam score for a student who scored a 90 on their third exam, one would need additional information about the scoring system and any trends in the student's performance over time. Without such information, a precise prediction is not feasible.