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Dinosaur Fossils In the past century, one of the most amazing findings by scientists has been dinosaur bones. Dinosaur bones also called fossils are the remains of old dinosaur skeletons. Sometimes scientists who discover dinosaur fossils just find footprints in the dirt. Other times, they find enough fossils to make a complete dinosaur. But how do dinosaur bones that are millions of years old get turned into fossils? How can something buried beneath dirt and sand last for so long? Fossil Formation When dinosaurs or other ancient animal or plant life dies, a gradual process begins. (A) Then the dead dinosaur is eventually covered by dirt and mud. (B) This leaves the hardest parts of the dinosaur- bones and teeth. (C) After thousands of years, the chemicals in the buried dinosaur's body go through a series of changes. (D) As the bone slowly decays, groundwater gets inside the bone. The minerals in the groundwater are replaced with the chemicals in the bone. These minerals are the same as the surrounding rock. As the dinosaur bone turns into a fossil, it becomes a heavy, rock-like version of the original dinosaur. It is now officially called a fossil. When scientists look for dinosaur fossils, they look for specific rock types. Fossils are usually found in either shale, siltstone, mudstone, or sandstone. Preservation (E) Preservation is an important word when studying fossils. (F) It means to keep something in the same condition for a long time. (G) One of the best examples of dinosaur fossils is in the Field Museum in Chicago. (H) The Tyrannosaurus Rex (or T-Rex) was the fiercest and largest dinosaur on the planet. It was a carnivore, or meat eater. T-Rex liked to eat smaller dinosaurs for dinner, using its powerful jaws to crush its victims. The skeleton of Sue was discovered in the dry plains of South Dakota in 1990 by Sue Henderson, a scientist. By studying prehistoric fossils, we can learn about life millions of years ago.

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FIRST CONDITIONAL REAL POSSIBILITY IF CONDITION PRESENT SIMPLE If she studies hard RESULT IF RESULT WILL/WON'T+BASE VERB she will pass the exam CONDITION WILL/WON'T+BASE VERB She will pass the exam PRESENT SIMPLE if she studies hard We use the first conditional when there is a real possibility that this condition will happen in the future. Exercise Write the verbs in brackets. Use the first conditional. 1-1 (stay) at home if it (rain) this afternoon. 2- If my brother, (go) abroad, I (be) very worried. 3- You 4- Melissa (not earn) enough money if you (can) to go out later if she (not work) more hours. (not finish) her homework 5-If1 (go) to the supermarket later, I (buy) some tomatoes. 6-Peter (get) wet if he (not take) an umbrella. 7-Ifi (find) the book you lent me, I (give) it back to you. 8-They (be) angry if we 9-What 10-Many workers 11-1 12-If he 13-My uncle 14-If you 15-Sandra, if you (not visit) them next Saturday. We promised to go. (not go) to work tomorrow? (happen) if you (lose) their jobs if that factory. (not buy) a bigger house if I (not finish) the vegetables, he (can) to go to the opera if he (close) down. (get) promoted at work. (not have) a dessert. (not remember) to get the tickets. (not taste) nice. (be) late for the meeting. (not put) sugar in your coffee, it, (not hurry up), you 16-Cristopher (be) so happy if he (find) the money he lost. 17-Your motorbike: (not break down) if the mechanic (check) it. 18-if you (not take) an aspirin, your headache, (not disappear).

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C. Complete the sentences. Use the verbs in the correct form: the future or the present. (8 marks) Example: I (clean) my room before I 13. If it 14. We 16. Noah (go out). I'll clean my room before I go out. 17. I (rain) tomorrow, we (not/ have) the picnic. 15. When you (go away) to college. (miss) Luke a lot when he (not/ recognize) her. (finish) work. (see) Liz again. You 18. Before I (turn off) the lights. 19. We soon as the rain 20. Let's (come) back. (go) to the gym after he (be) surprised if my sister (pass) her driving test. (leave), I (continue) with the game as (stop). (wait) until she

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A Vocabulary Listen and number. Physirs 1 Physics 1 AP Physics 2 AP Biology interview curriculum Reading 1. curriculum 2. attendance. 3. individual 4. encourage 5. experiment. 6. interview 7. salary 8. marry 9. private 10. stressful ● AP Physics 2 AP Physics 2 AP Chemistry • Track 1-01 attendance 2 Match the words with the definitions. salary Aim Read about different education systems individual marry encourage Sorry CLOSED private O Read the ar DIFFER USA goals s put int and m • a. a test, usually scientific, done to learn something b. to make someone more likely to do something employee • c. a fixed amount of money received by an ● d. subjects taught in school, college, or academy • e. only for one person or specific group f. the number of people who go to an event . g. a meeting to see if someone is suitable for a job or position ● h. making you feel worried and nervous • i. separate from the other people or things in a group ● j. to begin a relationship as a husband or a wife AltSo Pre-reading 3 Look at the jobs. Talk with a partner. Research online how to get these jobs. Des the education and experience needed for each job.

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21 Complete the sentences. 00 1. Lunch in US schools is usually and between minutes long. 2. If recess is before lunch, schools reduce plate waste by 3. Students put percent. percent of their school lunch into the trash. 4. Longer lunch breaks reduce food waste by

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: a fibreglass chimney; a rock front door; of? on stilts? se. Give reasons. Scramped esn't cost very Idn't you like attractive to me. st get very cold. do you read it? al idea of t of the question ose the rmation How the are not ct How would you like to live in a castle, a tree house or even underground? This might not be as unusual as you think. It seems that these days more and more people want to live somewhere special and out of the ordinary, and if they can't buy what they want they are quite 5 prepared to build it from scratch. If an underground home doesn't appeal to you, how about living in the tree tops? Dan Garner, a tree surgeon from Gloucestershire, certainly thinks that this is the way to go up in the world. 35 For John Mew and his wife Josephine their home really is their castle. They have built their own English castle in the Sussex countryside. The building is brand new with all the luxuries you would expect from a house that cost 1 more than £350,000 to build. However, when you first see it from the outside it would be easy to think that you are looking at an ancient monument. The building has a lot of the features of a traditional castle, including a keep, a moat and a drawbridge. "My choice of house is 1 somewhat eccentric and building it was very hard work, but we've got the perfect place to live," Mew says. Although some would say that the building is impractical and may be cold in harsh British winters, he certainly has got a unique and spacious home. "When our family became short of space at home our solution was to build a luxury tree house in the garden. The tree house is built into a spruce tree six metres above the ground. It has one main room, a bedroom and a balcony running around two sides." Garner is so happy 40 with this practical extension to his home that he thinks he can convince more people of the benefits of living in the trees. He wants to set up his own enterprise making more of the deluxe tree dwellings, saying, "Tree houses are airy, secure and comfortable and the only disadvantage 45 is that they might not be suitable for people who suffer from hay fever or a fear of heights!" 2 If you don't look carefully, you might not even see the home that Jonathan Ridley-Jones and Shanon Ridd built at all! That's because the house is a converted underground water tank. The only thing that can be seen from the surface is a door leading into the hillside. "We've 2 never wanted to live in an ordinary house," Shanon says. "Living below ground means that our home is quiet and very cosy none of the usual draughts. It doesn't damage the local surroundings and has very low fuel bills. Some of our friends find it dark and feel shut in 3 when they first visit, but they soon get used to it!" Even people who live in more ordinary settings sometimes can't resist doing something to make them stand out from the crowd. One extreme example of this 50 is Bill Heines' house in Headington, Oxfordshire. Until one morning in 1986, his house looked much like all the others in his street, when suddenly overnight a 7.5 m long fibreglass shark appeared to have crashed through the roof. The shark was a sculpture by local artist John 55 Buckley. At first some people complained that it might be dangerous or that it spoilt the look of the neighbourhood, but engineers checked that the sculpture was safe and the 'Headington shark' has become a well-known and popular landmark. It seems that no matter where you live, 60 you can always do something to make sure your house says something about who you are. 4 5 D It Why Ridle AI B 6 C D 7 Wh Ric A B 4 C D V

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10:14 น. Vo) 3.32 แปี" เfE KB/s Final m4.pdf กำหนดมวลอะตอม C = 12 H= 1 Cl = 35.5 N = 14 0 = 16 1. ให้นักเรียนเติมคำตอบลงในช่องว่าง แก๊ส มวล (g) โมล จำนวนอนุภาค ปริมาตรที่ STP (L) CH,CI, 98 N,0, 0.25 CO 1.12 2. คำนวณสูตรเอมพิริคัลของสารที่ประกอบด้วยร้อยละโดยมวลของธาตุองค์ประกอบต่อไปนี้ ร้อยละโดยมวลของธาตุองค์ประกอบ C H N 0 58.54 4.06 11.38 26.02 วิธีทำ 3. ถ้าต้องการเตรียมสารละลายโซเดียมคลอไรด์ ความเข้มข้น 0.25 โมลต่อลิตร จำนวณ 500 มิลลิลิตร จะต้องใช้โซเดียมคลอไรด์กี่กรัม วิธีทำ 4. ตุลสมการเคมีต่อไปนี้ 4.1 AI (s) + 0, (g) * Al,0, (s) 4.2 Fe (s) + H,0 (g) * H, (g) + Fe,0, (s) 5. เขียนสมการเคมี พร้อมทั้งดุลสมการของปฏิกิริยาเคมี จากข้อความต่อไปนี้ 5.1 เมื่อแยกน้ำด้วยกระแสไฟฟ้า โดยใช้สารละลายกรดซัลฟิวริก (H,SO.) เป็นตัวเร่ง ปฏิกิริยา จะได้แก๊สไฮโดรเจนและแก๊สออกซิเจน ตอบ การสังเคราะห์แก๊สแอมโมเนีย (NH,) ทำได้โดยใช้แก๊สไนโตรเจน (N,) และ 5.2 แก๊สไฮโดรเจน (H,) โดยมีเหล็กเป็นตัวเร่งปฏิกิริยา ตอบ

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ค Read the interview. 6-09 oguess that something will happen in the future. Our Happy Planet Garry: Hello, everyone! And welcome to the Our Happy Planet Talk Show, We're here with Professor Julie Bright, a sientist and expert on climate change. Julie: Thanks, Garry. Garry: So, Julie, in your opinion, do we do enough to keep our planet healthy? Julie: Actualy, I think that the world is going to end in the next 100 years. Garry: I'm sorry. In 100 years? Oh dear.. thats terrible. Can you explain further? Julie: Its because we've already done too much damage to the planet, and now that darmage is permanent. In my opinion, we're past the point of trying to protect the planet. Now we should try to save ourselves. Garry: Surely there's something we can do. What's the cause of all this damage? Julie: Well, the cause is pollution, and its effect is climate change. It's destroying our planet, and it will continue to do So. Its to the point that we cannot stop it. Its causing the ice caps to melt. (A) Soon they will all disappear. This in turn will cause sea levels to rise. [B) Its predicted that sea levels will rise another 48 centimeters by the year 2050. This will flood many coastal cities. They will be lost forever beneath the water. Flooding isn't the only problem being caused by climate change either. Climate change is causing drought, famine, fires, and other disasters to happen more often all over the world. [C) The bottom line is: we're losing the fight against climate change. Garry: But, Professor, if we stop poluting the environment, can't we prevent these disasters that you are predicting? Julie: Hmm. Well, it couldn't hurt. But, in order for us to make a real difference, we'd have to stop polluting the planet now. Climate change is a problem for all people living now. It's not a problem for our kids or our kids" kids. comprehension Circle true or false. 8 1. Julie believes the damage done to the planet is permanent 2. Sea levels have risen 48 centimeters. 3. Melting ice caps cause droughts, famines, fires, etc. 4. Julie thinks natural disasters cannot be prevented. true false true false true false 6 Read the statements. Then fill in the boxes with the best place to insert the sentences [A-C]. The ice caps have melted faster in the last 20 years than they have in the past 10,000 years. These disasters can also cause issues such as lack of food and water. The sea level has increased by 23 centimeters in the last 140 years. Listen and read. Then fill in the blanks with the correct words. 7-09 Hello sports fans. Welcome to the 23rd annual Bayslde High School Athletics Day. I'm your host, Vic Romano. Today, I'll be covering all of the action. First up is the three-on-three basketball tournament. The Ballers are this year's champions! This most of the other teams. They morning, they 1. Couldn't lose. However, in the championship game, the Purple Elephants the Ballers in the first two quarters. Luckily n0 2. one got injured. By the end of the third quarter, though, the Ballers had the game under control, Ravi Patel 3. most other players. He led the game in rebounds. He also 4. everyone else. Meanwhile, team captain Eduardo Marque2 5. point guard. He gave assists to all his teammates. Finally, teammate Kenny Longhorn made an the Elephants unbelievable shot. Thanks to Ravi, Eduardo, and Kenny, the Ballers won the game 123-95.

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(หCoMplete aud codowiuance practice #2 In a certain cactus, prickly spines can be two pronged or one pronged. If a true breeding one-pronged cactus is crossed with a true breeding two-pronged cactus, the F1 generation has a mixture of spines, some are two pronged, some are one- pronged. a. Is this an example of codominance or incomplete dominance? b. Show the F2 generation (a cross between the two F1's) What are the phenotypes and in what proportion? (Key O =one pronged, T= two pronged) Phenotypes One pronged % Two pronged One and two pronged % % In the same cactus, if you croรsed a plant that has red flowers to one that has yellow flowers, you produce a cactus that has orange flowers. (Key R=red and Y=yellow) a. Is this codominance or incomplete dominance? b. Show the cross of an orange flowered plant to a red flowered plant. Phenotypes: Red flowers % orange flowers % Yelow flowers % EALIVEWORKSHEETS (> (> () (> (> () (> () (> () () () ()

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a) Read the examples. How do we form the 1st & the Int mean to upset you. -/ you work hard, you will have a better chance of getting good grades. Grammar 1st & 2nd conditionals จาd conditionalร? Which sentence refers to an imaginary situation in the present? a situation likely to happen in the present or future? (NOT: If you wilf work hard, ....) 4 were yoน, T'd quit the School team and join a local team instead. 4 b) Put the verbs in brackets into the correct tense. What type of conditional is each sentence? 1 If Bill gets a part-time job, he พill e0.xn (earn) extra cash. 2 Unless you study harder, you (fail) your examร. 3 If the older students bullied me, I (complain) about it to my teacher. 4 If Kate (not/get) good marks, shel be upset. (join) a club. 5 If I had no friends, I (be) you, I'd ask 6 If I for help. 7 Unless he stops lying about me, I (report) him to the principal. (gossip) about me, 8 If my friendร Td ask them to stop.