Answer all of these questions! and give detailed answers.

1. if the amount of oil that spilled into the gulf coast had been processed oil, would that have been better or worse for the environment? explain your answer.

2. why is it so difficult to tell the impact of pollution in the deep ocean region?

3. how might marine scientists combat eutrophication?

4. which layer of the ocean do you think is most impacted by the great pacific garbage patch? explain your answer.

5. how might the negative impact of tourism on marine ecosystems be minimized?