Explain how scientists conclude the ages and distances of stars by observing their electromagnetic energy ?

If you lived in greece in about 300b.c. you had a good chance of witnessing which of the following? select all that apply

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire

True or false: a trust is a giant corporation made up of a group companies