What must you do when you are bored​

Which of the following countries has declared itself nuclear free

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

Because of their geographic similiarities, the nordic nations also have similar a. cultures c. religions b. economic activities d. all of the above