Rana wants to buy shirts for summer. should he buy cotton shirts or shirts made from synthetic material? explain

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.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table