Author Question: As compared to today, by the year 2050, the world's population is expected to A) decline by about ... (Read 197 times)

abc · **on:** Jul 12, 2018

As compared to today, by the year 2050, the world's population is expected to

A) decline by about 100 million people.
B) stay about the same.
C) increase by about 1 billion people.
D) increase by about 2 billion people.

Question 2

A colorless gas that dissolves in water vapor to form acid and is emitted from coal-fired power plants is

A) nitrogen dioxide.
B) carbon monoxide.
C) carbon dioxide.
D) sulfur dioxide.