Complete the sentence using one of the following words: law, theory, or hypothesis.
In science, a
is something that always applies under
the same conditions.
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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.

In an energy pyramid, which level has the most available energy?

Why does a cake rise when you bake it? ♡