1.___________ is required for changes to happen in a system.
2.Caused by temperature differences between two parts
3.Blocks conduction

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do you guys know this by any chance 3. How did the Crusades affect trade and daily life in Europe near the end of the Middle Ages?The Crusades decreased trade because merchants were afraid to travel in the midst of brutal battles.The Crusades limited trade as families lost breadwinners and, therefore, had no money to spend.The Crusades increased trade since soldiers were paid a salary and therefore had more resources.The Crusades increased trade as treasures from foreign lands were brought back to Europe, creating a desire for more. what is the definition of chemical formula? What is the answer to this? jennifer bikes 7 miles south and then turns to bike 13 miles east how far away is she from where she started? NO ONE IS HELPING ME PLEASE IM FINNA CRY I SWEAR I BEGGING YOU!!!! THIS IT DUE TODAY!!! (50 POINTS) NO COPY AND PASTEING PLEASE1. At the end of the video clip the narrator mentions the Columbian Exchange. We know that Columbian refers to Christopher Columbus. What does the word exchange mean?2. Make an inference about what the term Columbian Exchange might refer to.3. Take a moment to view the map on the next slide (Hint: if you view in Present Mode it will be larger). what will happen to the area of a square if the length of its sides are halved berkshire hathaway a corporation, owns Goldman Sachs preferred stock with a 12 dividend yield. What is Berthshire Hathaway's after-tax dividend yield on this preferred stock if their marginal tax rate is What's the value ofz? - 3x + 1when x = -2 and y = 42 A puppy named Boots started out at 4 pounds and gained 3 pounds every month. At howmany months did Boots weigh 25 pounds? Anna runs three over4 mile in six minutes. Assuming she runs at a constant rate what is her speed in miles per hour Is a diamond a homogeneous or heterogeneous mixture? If 0.5 kg of this material is used in a transformer core, how long would it have to operate at a frequency of 60 cps to heat up 1 What would be the answer to this honest answers only its important if you remove my question you not big brain An electric company charges a certain rate per kilowatt-hour (\text{kWh})(kWh)left parenthesis, start text, k, W, h, end text, right parenthesis of electricity used and an administrative fee of \$3.50$3.50dollar sign, 3, point, 50. The company charged Zhao \$63.25$63.25dollar sign, 63, point, 25 for using 800\,\text{kWh}800kWh800, start text, k, W, h, end text of electricity. Zhao uses the equation, 63.25=800r+3.5063.25=800r+3.5063, point, 25, equals, 800, r, plus, 3, point, 50 to represent the situation. Which characteristic of life is the car missing that leads someone to conclude it is not alive? Please answer in complete sentences Imagery appeals to which of these? Select five responses.sightMoodsoundsuspensetouchtoneI tasteI smell You flip a coin. What is p(heads)? Write your answer as a percentage rounded to the nearest tenth Historically, 79% of credit card users carry a balance from month-to-month. A certain credit card company would like to study the spending patterns of its cardholders in more detail and to start the analysis, takes a random sample of 142 cardholders. What is the probability more than 75% of these cardholders are carrying a balance? (Use 4 decimals.)