Which statement is true?

a hypothesis must be based on the researcher's analysis of the data collected in the experiment.
a hypothesis must be testable for it to be useful in scientific research.
a hypothesis must be supported by the results of the research study.
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Which is the best way to define a common in environmental science a. a worthless resource b. shared resource c. a rare resource d. a typical resource

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Set comes up with for examples of sound waves ocean wave light wave and hand wave which of tonys examples is not an actual scientific wave