The answer is ... 16 I think
Answer:
The Amazon is the world's longest river.
New Orleans, Louisiana.
If you look at a map and insert these coordinates, New Orleans is the city located at 30n 89w.
Hope this helps!
The correct answer is letter A. Biosphere is not directly studied in one of the main branches of Earth/Space science. This is a branch of science that focuses on living organisms that are living in different populations or communities all over Earth. The other three choices directly study these branches of Sciences.