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Lyme disease is spread by the tiny deer tick. To prevent: Wear light-colored clothing, long pants tucked into socks. Avoid tall grass and shrubby areas. Wear a tick repellent. Check for ticks after your activity & remove them with "needle-nose" tweezers.
Recommended: Books
National Geographic. 5thEd. Dunn & Alderfer....
Humpback whales sing long, complex "songs" that last 10-20 minutes. The song is repeated continuously for hours at a time, and it changes gradually from year to year. Singing whales are males, and the songs may be a part of mating behavior.