What makes up more than fifty percent of your blood? a. platelets b. plasma c. white blood cells d. red blood cells

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.

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon