Higher-pitched sounds have blank

a. lower frequencies

b. more decibels

c. higher amplitudes

d. shorter wavelengths

there are no correct statementd on the list of choices you provided.

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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1 is a answer of a question