3. Imagine that a radioactive isotope has a half-life of 2 years. A sample contains 1000 atoms of the radioactive isotope. Complete the following table to predict
how many atoms of the radioactive isotope remain in the sample over time.

Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.