I need answer for this question : Dogs can only perceive which of the following two colors? Answer

Which U.S. state was created as a result of the Civil War? Correct
Which of these restaurants has an identical menu to Hardee’s? Correct
U2’s “Angel of Harlem” was written about what singer? Correct
Maine was a part of which U.S. state until 1820?Maine was a part of which U.S. state until 1820?
Which of these fast-food chains is named for its founder?
What city is famous for a type of no-cheese pizza called “tomato pie”? Correct
What city is famous for a type of no-cheese pizza called “tomato pie”? Explained
Chess master Garry Kasparov famously lost to which computer in 1997? Correct
Chess master Garry Kasparov famously lost to which computer in 1997?
Chess master Garry Kasparov famously lost to which computer in 1997? Explained