Why is it important to follow all directions in an experiment carefully?

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

What are the chemical names of these compounds? ke: mg3n2: reset next