Which question is answered in the section “Sound Waves”? A
When did Václav Kuna and John Nábělek first record whale songs?
B
What allows whales to make their songs so loud?
C
How do air guns affect whales and other ocean life?
D
Why is there so much gabbro in the ocean's crust?

Match the following: 1. communiqué 2. contiguous 3. extremist to prevent something or someone from making progress on a goal e states or locations touching one another in an unbroken chain 133 a person who is absolutely fanatical about a belief system se one who rebels against established authority with force 33a formal statement or message. usually in diplomatic circles 333 overrestrictive and controlling, such as a leader over his people 4. insurgent 5. repressive 6. stymie