Juan and Richie spread out some clay on their lab bench. This was to model the earth; soil and rocks. They placed a large ice cube on the clay to model a glacier and they waited for the ice to melt. When the ice turned to water, they mopped it up and there was a depression left in the clay. The boys had modeled a glacier the earth.

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 must happen before a body cell can begin mitotic cell division

If an atom has 12 protons and 13 neutrons