Which geographical feature, made of large treeless areas and tall grass, can be found in the great plains of the u. s.? a. prairies b. mountains c. plateaus d. swamps

Where was oil production at its highest in the 1980s and still remains important to the russian economy? central asia the ural mountains russian siberia the caucasus region

Who believed that the universe was made of tiny uncuttable particles

Compare and contrast the four types of crystals