What term describes when the offspring in a species stay with their mother for life, except possibly splitting off to form their own family groups? patriarchal structure
matriarchal structure
authoritarian structure
oligarchical structure

Select the correct answer. what was edwin hubble's contribution to the field of astronomy? a. he discovered variable stars. b. he proved that the heliocentric model accurately described our solar system. c. he found a relationship between the period luminosity and distance of stars. d. he proved that the universe is finite. e. he discovered that the universe was expanding.