Earthquakes seemed to outline a special feature of earth's crust. Earthquakes let scientists know where the crust was moving. This led to the discovery that the Earths crust was broken up into regions, or plates. Earthquakes happen most often along these plate boundaries. This was evidence that continents can move. The movements of the plates are called plate tectonics. The Earths crust is divided into plates. There are about a dozen large plates and several small ones. Each plate is named for the continent or ocean basin it contains. Scientists know he plates are in motion. They now know the direction and speed of this motion . Plates dont move very fast. They move only a few centimeters a year. This is about the same rate fingernails grow. So you might wonder, what could cause this motion? What supplies the energy to cause this change?

Question: "To get a sense of how fast plates move, what can you look at on your body?"

Answer: "Feet"

Response: no

According to the radar reconstruction, American 77 reemerged as a primary target on Indianapolis Center radar scopes at 9:05, east of its last known position. The target remained in Indianapolis Center's airspace for another six minutes, then crossed into the western portion of Washington Center's airspace at 9:10. As Indianapolis Center continued searching for the aircraft, two managers and the controller responsible for American 77 looked to the west and southwest along the flight's projected path, not east-where the aircraft was now heading. Managers did not instruct other controllers at Indianapolis Center to turn on their primary radar coverage to join in the search for American 77. In sum, Indianapolis Center never saw Flight 77 turn around. By the time it reappeared in primary radar coverage, controllers had either stopped looking for the aircraft because they thought it had crashed or were looking toward the west. Although the Command Center learned Flight 77 was missing, neither it nor FAA headquarters issued an all points bulletin to surrounding centers to search for primary radar targets. American 77 traveled undetected for 36 minutes on a course heading due east for Washington, D.C. By 9:25, FAA's Herndon Command Center and FAA headquarters knew two aircraft had crashed into the World Trade Center. They knew American 77 was lost. At least some FAA officials in Boston Center and the New England Region knew that a hijacker on board American 11 had said "we have some planes." Concerns over the safety of other aircraft began to mount. A manager at the Herndon Command Center asked FAA headquarters if they wanted to order a "nationwide ground stop." While this was being discussed by executives at FAA headquarters, the Command Center ordered one at 9:25. The Command Center kept looking for American 77. At 9:21, it advised the Dulles terminal control facility, and Dulles urged its controllers to look for primary targets. At 9:32, they found one. Several of the Dulles controllers "observed a primary radar target tracking eastbound at a high rate of speed" and notified Reagan National Airport. FAA personnel at both Reagan National and Dulles airports notified the Secret Service.

Question: "What was one of the mistakes besides the air traffic control search that lead to America 77 flying for 36 min. undetected?"

Answer: "Neither it nor FAA headquarters issued an all points bulletin to surrounding centers to search for primary radar targets"

Response: yes

My father was named James Page Jackson because he was born on the old Jackson plantation in Lancaster county, Virginia. He named one of his daughters Lancaster for a middle name in memory of his old home. Clarice Lancaster Jackson was her full name. A man named Galloway bought my father and brought him to Arkansas. Some called him by the name of Galloway, but my father always had all his children keep the name Jackson. There were fourteen of us, but only ten lived to grow up. He belonged to Mr. Galloway at the time of my birth, but even at that, I did not take the name Galloway as it would seem like I should. My father was a good carpenter; he was a fine cook, too; learned that back in Virginia. I'll tell you something interesting. The first cook stove ever brought to this town was one my father had his master to bring. He was cook at the Anthony House. You know about that, don't you? It was the first real fine hotel in Little Rock. When father went there to be head cook, all they had to cook on was big fireplaces and the big old Dutch ovens. Father just kept on telling about the stoves they had in Virginia, and at last they sent and got him one; it had to come by boat and took a long time. My father was proud that he was the one who set the first table ever spread in the Anthony House.

Question: "What building was located in Little Rock?"

Answer: "House"

Response: no

When you get sick, your body springs to action. Your body starts to fight the illness. Thats why you want to eat right and get plenty of sleep. You need a strong immune system to fight off illness. Plants dont have an immune system. That does not mean they do not get sick. Plants are affected by disease just like us. Typically, their first line of defense is the death of part of the plant. This prevents the infection from spreading. Many plants also produce special chemicals to fight disease. For example, willow trees produce a chemical to kill the bacteria. The same compound is used in many acne products. You can see a picture of a willow tree in Figure Plants may be smarter than we think. No, they cannot talk to each other. They may be able to send messages, though.

Question: "Why does part of a plant die when a plant is infected by disease?"

Answer: "Because the sun is too strong"

Response:
no