How can you cause a substance to turn from a solid to a liquid or a liquid to a gas?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Wich level of organization includes all the other levels or organizations