The items listed below were found in a science classroom.

- a heart made of plastic with many of its parts labeled.
- clay formed to look like earth and other planets.
- a giant plastic plant cell with removable cell parts.

these items are all examples of..

a) models
b) control
c) experiments
d) variables

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.

hope this ! this is not copied! search it up, it's free of plagiarism!