Which products do you think required scientific knowledge to develop? Check all that apply.a flashlighta cell phonea hair dryereyeglassesa microwavea household cleaner

All of these products rely on scientific knowledge. A flashlight, cell phone, and hair dryer use electrical principles; eyeglasses use optics to change how light is focused; and a microwave uses electromagnetic waves to heat food. Household cleaners rely on chemistry to remove dirt and stains.

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