Which of the following events separate geologic time into eras and periods?

a. the number of earthquakes that occur at that time

b. the appearance and disappearance of groups of organisms

c. the appearance and disappearance of volcanoes

d. the creation of new ocean ridges

How did the late 19th century public schools change?

Answer asap ! 6) who was the main character of the odyssey? a. athena b. odysseus c. poseidon 7) what were the main foods of the myceneans? a. olive oil, goat cheese, fish, bread, and wine. b. wheat, barley, and milk. c. oats and chocolate 8) who were the main characters of the iliad? a. odysseus and athena b. athena and poseidon c. king agamemnon and achilles

Which type of work did slaves in the us south not engage in? gang work skilled work task work union work