Efficiency of a standard 60 w lightbulb

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force

The receptor cells that convert light energy into neural signals are called