When sound travel from rare to dancer medium the quantity that remains unchanged

Which statement correctly describes the relationship between frequency and wavelength?

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.

Anybody wanna ? (picture included? )