Why is the Phanerozoic Eon allowed only a small amount of space in the left column, but is expanded into a very large space when it comes to the Life on Earth column.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above