Because cars use oil and oil is a fossil fuel. And when you drive the engine heats up which make the smoke come out of the exhaust pipe and it gets into the air and pollutes which is dangerous for any creature that flies.
Answer:
Strong winds produce waves in the ocean. This is an example of interaction between the ocean and the atmosphere.
I think the United States is a well developed country. Like if you see India or Africa they are still developing.
I hope this helps :)