PLEASE HELPPP Researchers conducted an international study of school bullying in relation to family income. They surveyed 162,305 students aged 11, 13, and 15 at 5,998 schools in 35 countries. The researchers found that within each school, students from lower-income families were bullied more frequently than students from higher-income families. But, they did not find a higher frequency of bullying in lower-income schools or countries. In fact, the most bullying took place in schools and countries with the widest range of incomes or the the widest economic inequality. Analyze this research on bullying in relation to the following questions:
What research method was used in the study?
What kind of data was collected (qualitative or quantitative)?
What is one advantage of that research method for this study? What is one disadvantage?
What does it mean to ask whether the survey had validity?
What is one public policy issue that might be affected by the results of this research?

Avalue that describes how heavy an object is and is related to the force of gravity is

19. explain why a magnet from your refrigerator could not be used to lift something as heavy as a car. (chapter 7 – pages 202-203) 20. can a magnet ever have a single pole? explain your answer. (chapter 7 – page 208) 21. what happens to the wavelength of a wave if the frequency is increased? (chapter 9 – pages 280-281) 22. an ocean wave has a wavelength of 10 m and a frequency of 4.0 hz. what is the velocity of the wave? show the appropriate equation from your book and show your work with units. (chapter 9 – page 282) 23. as you sit outside, the sound of a siren becomes lower in pitch. is the emergency vehicle moving away from or towards you? explain how you know. (chapter 10 – page 315-316) 24. why are two astronauts in space unable to hear one another? (chapter 10 – page 307) 25. explain in at least 3 sentences how electromagnetic waves form. (chapter 11 – page 338-339) 26. using the chart on page 345 in your textbook, what are the three types of electromagnetic wave with wavelengths shorter than those of visible light. give an example of each. (chapter 11 – pages 345-351) 27. explain why a leaf usually appears to be green, but a rose typically appears red. (chapter 12 – page 373) 28. what is the difference in light that is refracted compared to light that is reflected? think in terms of speed of light as well as what happens to light waves when they interact with a medium. (chapter 12 – pages 369-370) 29. how are concave and convex lenses different? (chapter 13 – page 408-410) 30. what type of mirror is used in rearview mirrors in cars? why is it important that these mirrors have the warning, “objects in mirror are closer than they appear.”? (chapter 13 – page 405)

Which of these is the best way to manage a natural resource