What is the four layers of the atmosphere and what is the definition of the green house effect?

Which country in the video has the highest population growth rate?

What was apartheid and how did it restrict the rights of non-whites?

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