Why is gravity and example of a scientific law

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Which lists correctly orders nuclear reactions from most radioactive waste generated to least waste generated within a given period of time? o a. radioactive decay, nuclear fission, nuclear fusion o b. radioactive decay, nuclear fusion, nuclear fission o c. nuclear fusion, nuclear fission, radioactive decay o d. nuclear fission, nuclear fusion, radioactive decay

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?