1. The imposition of heavy taxes on industries that emit toxic substances into the environment could prove to be an effective _______ to maintaining a clean, green earth.   Hint Hint       2. At the farewell function, the dignitary's address to the young graduates was _______, offering no new words of wisdom but common knowledge.   Hint       3. The members of the parliamentary committee had such strongly _______ views that even after several meetings they could not reach a _______.   Hint       4. Compared to real estate, nearly all else appears relatively inexpensive, _______ nearly nothing appears not affordable.   Hint       5. She is certain to alienate her colleagues in a short period of time because of her overall _______ attitude.   Hint       6. Although she did not take any formal biology classes in school, her discovery _______ the notion that she was unfamiliar with the way living organisms behaved.   Hint       7. It is not mere fiction that a dolphin can carry on two conversations simultaneously, one by whistling and the other by making clicking sounds; in fact, the phenomenon is not even _______.   Hint