Which of the following will be the world's largest country by 2050?

Which of the following will be the world's largest country by 2050?
 
  A) China
  B) India
  C) Nigeria
  D) United States
  E) Indonesia

Question 2

China is now emitting almost twice as much carbon dioxide as the next-biggest polluter, the United States.
 
  Indicate whether the statement is true or false

Question 3

Most of the pipes in the United States, especially in cities along the eastern seaboard, are nearly 200 years old.
 
  Indicate whether the statement is true or false

Question 4

Most water problems are a result of an imbalance in nature.
 
  Indicate whether the statement is true or false

Question 5

In many countries, clean water is a luxury rather than a basic human right.
 
  Indicate whether the statement is true or false