Because they stretch across 4,500 miles, the mountains are considered the world’s longest mountain range. a. appalachian b. rocky c. andes d. sierra madre     select the best answer from the choices provided. a b c d

Will give brainliest asaapppppppppppp plz im in a major hurry to finish which of these pairs of objects exerts the greatest gravitational force on each other? object 1 and object 3 object 4 and object 3 object 1 and object 4 object 4 and object 2