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Arsenic contamination of ground water has become a serious problem all over the world. Large number of people from Uttar Pradesh, Bihar and West Bengal of India are suffering due to consumption of arsenic contaminated drinking water. Study was carried out on 30 individuals residing in Ballia District, UP where the maximum concentration of arsenic was observed around 0.37 ppm in drinking water. Blood samples were collected from them to find out the problem related with arsenic. Cytogenetic study of the blood samples indicates that out of 30, two persons developed Klinefelter syndrome.  相似文献   
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Instructional Science - Educative curricula support teacher learning as well as the learning of students. High quality educative curricula contain features that help teachers customize learning...  相似文献   
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Research in Science Education - Around the globe, science education during compulsory schooling is envisioned for all learners regardless of their educational and career aspirations, including...  相似文献   
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