Microsoft word ใบกิจกรรมโครงสร้างของปอดหมูThanyamon Chat.1. A study examined the effects of different levels of fluoride in water on dental health in several communities.
2. Fluoride levels between 0.7 to 1.2 parts per million were found to be optimal for reducing cavities compared to levels below 0.5 ppm or above 4.0 ppm.
3. Both too low and too high fluoride levels were found to increase risks of dental fluorosis, though the risks were greater at the higher levels above 4.0 ppm.
แบบสอบถามความคิดห็Ȩกี่ยวกับทัศนคติเรื่องเพศสัมพันธ์ในวัยเรียนPeung Chanthimarn1. The document discusses a survey that was given to students to understand their preferences and habits regarding various online activities and tools.
2. The survey included questions about social media usage, communication apps, learning management systems, and other online resources.
3. Students were asked to rate how frequently they use different online options on a scale and to select their most and least preferred tools.
แบบสอบถามความคิดห็Ȩกี่ยวกับทัศนคติเรื่องเพศสัมพันธ์ในวัยเรียนPeung Chanthimarn1. The document discusses a survey that was given to students to understand their preferences and habits regarding various online activities and tools.
2. The survey included questions about social media usage, communication apps, learning management systems, and other online resources.
3. Students were asked to rate how frequently they use different online options on a scale and to select their most and least preferred tools.