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ZR0 CONDITTONAL - CERTAINTY IF/WHEN CONDITION RESULT PRESENT SIMPLE PRESENT SIMPLE If/When you heat butter it melts RESULT IF/WHEN CONDITION PRESENT SIMPLE PRESENT SIMPLE Butter melts If/when you heat it We use the zero conditional when the result of the condition is always true and obvious. Exercise Write the verbs in brackets. Use the ZERO conditional. 1-If it (rain), the streets (get) wet. 2-My mother (get) angry when I (not do) my homework every day. 3- If you (run) too fast, you (get) really exhausted. 4-1 can't (understand) Elizabeth when she (speak) so quickly. 5-If Madeleine (miss) the seven o'clock train, she (be) late for work. 6- When you | (turn on) an electric al appliance, the electricity meter (go) up. 7- My little sister always (cry) when she (be) hungry. 8-When you |(drink) too much alcohol, you sure (get) drunk. It's dangerous. 9-The mountains (get) white when it (snow). 10-If you (don't drink) enough water, yoน (become) dehydrated. 11-You (gain) weigh if you (eat) too much sugar and fried food. 12-When my mother (have) a toothache, she always, (take) an aspirin. 13-If you (mix) red and blue, you, (get) purple. 14-Plants | (die) if they (not get) enough water. 15- If you (break) a leg, it (hurt) and it's very painful. 16- When my friends (tell) me an important secret, I never (tell) it to anyone. 17- You (get) a substantial fine if you (not pay) your taxes. 18- If you (not get) enough vitamins and iron, you| (suffer) from anaemia.

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หน่วยการเรียนรู้ที่ 3 พันธุกรรมและความหลากหลายทางชีวภาพ 83 5. ประชากรของกระหอกสปีซีส์ A อาศัยอยู่บนพื้นแผ่นดินไหญ่แห่งหนึ่ง เมื่อผสมพันธุ์กันทำให้มีประชากร กระรอกเพิ่มมากขึ้น ต่อมาพื้นแผ่นดินนั้นค่อย ๆ แยกจากกันเป็นพื้นแผ่นดินไหม่ ทำให้กระรอกสปีชีส์ A ที่อยู่ในพื้นแผ่นดินใหญ่เปลี่ยนแปลงไปเป็นสปีชีส์ 3 และสปีชีส์ ( ดังชูป Species A อธิบายกระบวนการเกิดสปีชีส์ใหม่ของกระรอก พร้อมทั้งให้เหตุผลโดยใช้หลักการทางวิทยาศาสตร์ 6. พิจารณาแผนภาพสายวิวัฒนาการ (cvolution tree) แบคทีเรียสังเคราะห์ ด้วยแสง แบคทีเรีย พืช สัตว์ ฟังใจ เวลา อาร์เคียแบคทีเรีย ยูแบคทีเรีย บรรพบุรุษของยูแคริโอต บรรพบุรุษของโพรแคริโอต 6.1 เหตุใดแบคทีเรียจึงมีบรรพบุรุษเป็นโพรแคริโอต 6.2 บรรพบุรุษของยูแคริโอตพัฒนามาจากอะไร และเหตุใดพืช สัตว์ และฟังใจจึงมีบรรพบุรุษเป็น ยูแคริโอตเหมือนกัน 6.3 เวลามีความสัมพันธ์กับแผนภาพสายวิวัฒนาการนี้อย่างไร

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HN) Exercises (1)You take 200 milligrams of a headache medicine, and after 4 hours, 120 milligrams remain in your system. If the effects of the medicine wear off when less than 80 milligrams remain, when will you need to take a second dose, assuming the anmount of medicine in your system decays exponentially? 13 ส.ค. The half-life of Radium-226 is 1590 years. If a sample initially contains 200 mg. how many milligrams will remain after 1000 years? )The half-life of Fermium-253 is 3 days. If a sample initially contains 100 mg, how many milligrams will remain after 1 week? บ้อ The half-life of Erbium-165 is 10.4 hours. After 24 hours a sample still contains 2 mg. What was the initial mass of the sample, and how much will remain after another 3 days? The half-life of Nobelium-259 is 58 minutes. After 3 hours a sample still contains10 mg. What was the initial mass of the sample, and how much will remain after another 8 hours? (6) A scientist begins with 250 grams of a radioactive substance. After 225 minutes, the sample has decayed to 32 grams. Find the half-life of this substance. A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.)

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ke about markets? Boston Market Wins More Customerร Boston News 7 Haymarket vendors have a reason to celebrate. Their market is becoming more popular than ever. says (This is the busiest market in Boston! Vicky Green at her fruit stand. All the locals come close to downtown. It also has here because its very Convenient hours and the best prices in Boston! For hundreds of years, Haymarket has been the best place to buy fruits and vegetables in Boston. Vendors started gathering in this area of Bostons North End in the mid-1700s. The market grew larger in the nineteenth and twentieth centuries, but almost wholesalers weren't able to sell to grocery stores. "Just remember that the fruits and vegetables are usually very ripe; says Stacy Mills, 30, 'so you need to eat them SOon. But you can get a lot of produce for a great price. And the vendors are much friendlier than salespeople in a supermarket." 4 disappeared when highway construction disrupted the street in the 1990s. The street is now filled with produce stands selling fruits and vegetables from all over the world. And customers love it. Prices here are often cheaper 3 than in the grocery store, so you can find some great In every grocery store you always find the same products, says Eileen Fisher, 21. Iprefer Haymarket because I can get some really exotic food here, for example, from Asia or North Africa. And there are many market stands to choose from The future has never looked better for Haymarket. It has truly become a Boston tradition! bargains, explainsร Nick Baines, 16. This is because vendors sell the produce that nearby

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10:19 ส. 3 ก.ค. จ84% e liveworksheets.com Exercise 2 : Nouns: Countable & Uncountable What did you buy? Use the pictures to write sentences (I bought .). 3 Toothpaste I bought some perfume, 4. hat and some shoes 2 [ bought 1 a pen, a flower, and a newspaper 3 4 Write sentences with Would you like a .. ? or Would you like some . ? 4 6 Would you ike some cheese? 2 Would you like 3 Would| 1 4 some coffee a cup of coffe ? 5 you like a biscuit ? 6 3 Write a/an or somc. book and listened to money. I want to buy 1 I read 4. Some 1วาusic. 2 I need food. 3 We met interesting people at the party. window to get only| Dfresh air. Japple and nice garden with 4 I'm going to open 5 Rachel didnt eat much for lunch big house. There's 7 I'n going to ทาake a table. First I need Jbread. |beautiful trees. 6 We live in WOod. 8 Listen to me carefully. Im going to give you paper and advice. Dpen. 9 | want to write a letter. I necd 4 Which is right? 1 I'm going to buy some new shoe/shoes. 2 Martin has got browin eye/eyes. 3 Paula has got short black hair/hairs. 4 The tour guide gave us some information/informations about the city. 5 We're going to buy soine 1new chair/chairs. 6 Were going to buy some new furniture/furnitures. 7 Its hard to find a work/job at the moment. 8 We had woonderful weather / a wonderful weather when we were on holiday. (shoes is right) ECLIVEWORKSHEETS Save for later Finish!

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