Earths magnetic field helps protect Earth and its organisms. It protects us from harmful particles given off by the sun. Most of the particles are attracted to the north and south magnetic poles. This is where Earths magnetic field is strongest. This is also where relatively few organisms live. Another benefit of Earths magnetic field is its use for navigation. People use compasses to detect Earths magnetic north pole. Knowing this helps them tell direction. Many animals have natural 'compasses' that work just as well. Birds like the garden warbler in Figure 1.36 use Earths magnetic field. They use it to guide their annual migrations. Recent research suggests that warblers and other migrating birds have structures in their eyes. These structures let them see Earths magnetic field as a visual pattern.

Question: "Why do few organisms live on the North and South poles?"

Answer: "Sun's magnetic field is strongest"

Response: no

Befitting a lush, tropical island stranded in the middle of the ocean, Madeira's origins are shrouded in mystery and fanciful legend. Some claim that the archipelago is what remains of Plato's lost Atlantis, or part of a landmass that once fused the continents of Europe and America. The Portuguese Step Ashore: Recorded history of the volcanic archipelago begins in relatively recent times: 1418, just as the golden age of Portuguese discovery was erupting. Under the leadership of Henry the Navigator, caravels set out from the westernmost point of the Algarve, in southern Portugal, in search of foreign lands, fame, and wealth. Joao Goncalves Zarco, sailing in the service of Prince Henry, made the first of many famous Portuguese discoveries, which would culminate a century later in Magellan's historic circumnavigation of the globe. Zarco happened upon a small volcanic archipelago 1,000 km from Lisbon. Perhaps Zarco knew precisely where he was heading, having learned of the existence of Madeira from a Castilian source. After all, the waters of the Canary Islands, only 445 km (275 miles) to the south, had occupied busy shipping lanes for very nearly a century, and Genovese maps from the mid-14th century depict both Madeira and Porto Santo. More likely, Zarco was heading for Guinea and storms forced him onto the beach of Porto Santo. If so, then he was extremely fortunate, for he managed to land on the only large, sandy beach for hundreds of miles around. Little wonder he subsequently named it Porto Santo (Holy Port). The following year Zarco returned to claim the larger island he had seen from Porto Santo, and with him went Tristao Vaz Teixeira and Bartolomeu Perestrelo. They officially became the first men to set foot on the heavily forested island, naming it Ilha da Madeira, "Island of Timber. " The Portuguese Crown, delighted with its first important discovery, immediately embarked on a program of colonization. Zarco and Teixeira were appointed co-governors of Madeira, while Perestrelo was awarded Porto Santo.

Question: "How might Zarco have known of the location of the volcanic archipelago before he landed on it?"

Answer: "Henry The Navigator"

Response: no

Right after the Pentagon was hit, NEADS learned of another possible hijacked aircraft. It was an aircraft that in fact had not been hijacked at all. After the second World Trade Center crash, Boston Center managers recognized that both aircraft were transcontinental 767 jetliners that had departed Logan Airport. Remembering the "we have some planes" remark, Boston Center guessed that Delta 1989 might also be hijacked. Boston Center called NEADS at 9:41 and identified Delta 1989, a 767 jet that had left Logan Airport for Las Vegas, as a possible hijack. NEADS warned the FAA's Cleveland Center to watch Delta 1989. The Command Center and FAA headquarters watched it too. During the course of the morning, there were multiple erroneous reports of hijacked aircraft. The report of American 11 heading south was the first; Delta 1989 was the second. NEADS never lost track of Delta 1989, and even ordered fighter aircraft from Ohio and Michigan to intercept it. The flight never turned off its transponder. NEADS soon learned that the aircraft was not hijacked, and tracked Delta 1989 as it reversed course over Toledo, headed east, and landed in Cleveland. But another aircraft was heading toward Washington, an aircraft about which NORAD had heard nothing: United 93. United Airlines Flight 93 FAA Awareness. At 9:27, after having been in the air for 45 minutes, United 93 acknowledged a transmission from the Cleveland Center controller. This was the last normal contact the FAA had with the flight. Less than a minute later, the Cleveland controller and the pilots of aircraft in the vicinity heard "a radio transmission of unintelligible sounds of possible screaming or a struggle from an unknown origin." The controller responded, seconds later: "Somebody call Cleveland?"This was followed by a second radio transmission, with sounds of screaming.

Question: "Which flight was reported as hijacked although it never turned off its transponder?"

Answer: "Delta 8919"

Response: no

Roberta Adams skipped the thick how-to guide on child-custody forms and sat down at a computer at the Lamoreaux Justice Center in Orange on Wednesday. The Garden Grove woman answered a series of questions to create and print a form to file with the court. "It's easy," said Adams, 25. "I thought I'd have all kinds of questions and have to take the forms home." A University of California, Irvine, study released Wednesday found an interactive computer system effectively helps people fill out paperwork for restraining orders, eviction defense, small-claims cases and requests for filing-fee waivers. Not only does the system make life easier for people who can't afford a lawyer, but it also might improve efficiency in the courts because the forms, which are printed out when completed, are easy to read and are being filled out correctly, the study found. Since the program started in 2000, more than 6,000 people have used the free system, located in public buildings throughout Orange County. The system was developed by the Legal Aid Society of Orange County with about $800,000 in grants. The program avoids legal jargon, offers a courthouse video tour and sticks to a fifth-grade vocabulary. Users can choose English, Spanish or Vietnamese. Kiosks are in courthouses in Fullerton and Orange, the district attorney's family-support office, the Legal Aid Society in Santa Ana, Irvine City Hall and the San Juan Capistrano Library. The program is also available online. Bob Cohen, executive director of Legal Aid, said the study should clear the way for expansion throughout California. Locally, a program for divorce petitions will be added this summer. Cohen said the system proves the benefit of technology tailored to those who aren't computer-savvy. He said much of the technology now available requires Internet skills and access. Low-income people, however, have less access to computers and less experience using them. "Our clients have to catch up, and they have to become a part of the mainstream," Cohen said.

Question: "What are two benefits of the system?"

Answer: "It avoids legal jargon and are in a variety of languages"

Response:
yes