18. Refer to Model 2. Study the bone arrangement in the bird and whale. Propose an explanation for the similarity of elongated bone arrangement in the lower parts of the forelimb (metacarpals and
phalanges), given the differences in the animals?

answer; i believe that the correct answer is (lung);

climate change and pollution

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.