What project topic should i use? chemistry and terrorism? oceans and pollution? or overpopulation?

Which of the following statements about wearher along mountain ranges is correct

In russia which of these challenges affects the transportation of both petroleum products and other goods?

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?