Given four hypothetical taxa, construct a tree in which Taxon G is more closely related to Taxon L than to Taxon A, but all three of these taxa are more closely related to each other than Taxon F. The most obvious way to determine the evolutionary relationship of organisms (i.e. their phylogenetic tree) is compare morphological similarities
At this time, the concept of index of refraction should be discussed on relative terms. When a substance bends light more than another, it is said to have a higher index of refraction. Oil has a higher index of refraction than water or air.Assessment: Students' responses to key concepts and their responses to additional examples.t this time, the concept of index of refraction should be discussed on relative terms. When a substance bends light more than another, it is said to have a higher index of refraction. Oil has a higher index of refraction than water or air.
As light is transmitted through more optically dense substances, it slows down i. Optical density is not the same as mass density (Ex. oil is less dense by mass than water-remember that oil floats on water-, but it is more optically dense, so light slows down more in oil than in water)* ii.In air, light travels only slightly less than c iii.In water, light travels at 75% c iv.s light is transmitted through more optically dense substances, it slows down i. Optical density is not the same as mass density (Ex. oil is less dense by mass than water-remember that oil floats on water-, but it is more optically dense, so light slows down more in oil than in water)* ii.