A scientist finds the charred remains of a tree in a layer of volcanic ash thought to be from the eruption of Mt. Mazama some 6600 years ago. Which radioactive isotope, U-238 or C-14, would you use to verify the age of the charred wood? Expain.

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research.b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research.c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data.d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)