Which of the following is an example of an adaptation?
a dog sits when it hears a a command because it’s owner rewards it with food
b. the coloring of a monarch butterfly alerts predators to the fact that the butterfly is poisonous.
c. birds that live near a highway learn not to fly away every time a car passes
d. pigeons make their nests near an outdoor restaurant, where food is always available.

B

Explanation:

The butterfly formed those adaptions so predators are less likely to eat it

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.