What observation did this geocentric model of the solar system help to explain? orbit speed
the phases of Venus
retrograde motion
the rising of the Sun

After about 1000 b.c, some people in siberia meaning their lives wre bassed on herding animals. a. pastoral b. collective c. irrigate d. dalits

It has been reported that the dna of the elephant shark has barely changed over the last 420 million years. which statement explains why the elephant shark has not changed over time?

Cyrus is volunteering on his aunt's campaign for state senator. she has asked him to write a speech informing people about the transportation reforms she will make, if elected. cyrus wants to coach his aunt in using speech techniques to make her ideas heard.