How might knowing the Earth’s position relative to the center of the Milky Way help you make a map of the Milky Way?

How and why organisms are hierarchically classifies

How does the fossil record provide evidence that the modern whale evolved from the anthracotheres? a) the modern whale looks like their ancestor the anthracotheres. b) the modern whale has all of the same structures as their ancestor. c) there is not enough evidence to suggest the the modern whale evolved from the anthracotheres. d) the anthracotheres has a structure that is still present in the modern whale, but is no longer of use to the modern whale.

Which elements are in the substance that makes up about 60% of the male human body