The Hong Kong volcanoes

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.

What three natural resources are found in the great lakes region

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: