Select the reasons why most professional telescopes are reflectors rather than refractors. A mirror can collect light more efficiently than a lens. Only the front surface of a mirror has to have a precise shape. Lenses are not subject to chromatic aberration. A lens has to be supported only around its edges. Reflecting telescopes have shorter focal lengths than refracting telescopes. It is easier to make a large reflecting telescope than a large refracting telescope.

d is the answer i came up with

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

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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