Why is there less gas and dust in an elliptical galaxy?

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

Rah is completing a school project on the expansion of fast food restaurants across the united states. she finds a map that shows a clear pattern of restaurants beginning in the east and expanding west. this map was most likely created using the technology of

In 1200 bce, the egyptian empire was declining as the civilization was beginning in mesoamerica. a. maya b. oaxaca c. olmec d. teotihuacan