What is the predictable motion of a wheel? How did the predictable motion of wheels enhance transportation

Which changes of state do the labels represent? a: b: c:

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.

What is the speed of an object at a given moment?