After severe dust storms in the 1930s, practices were put in place to reduce soil erosion. Which practice best helped to reduce soil erosion?

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.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Which tool is least in predicting weather