The question style in high school environmental science textbook was examined in terms of the placement, frequency, and type of question, and then analyzed the kind of scientific inquiry process elicited by the question in the topic of textbook using the Textbook Questioning Strategy Assessment Instrument (TQSAI). The average number of question per topic was only 0.6. The number of all question in the high school environmental science textbook was very little ; the number of non-experiential question was 8 and that of experiential one was 3. The total number of sentence was 1,236 and the ratio of the number of question to that of sentence was 0.9%. The frequency of non-experiential question was higher than that of experiential one. In action part of the textbook, there were more kinds of question styles than in the main part.

The environmental regulation violation of the Korean firms is causing severe environmental pollution lately. Nevertheless, there are few studies on the firm`s pattern of environmental regulation violation. In this paper, for the pattern of environmental regulation violation of the Korean firms, we give a type of statistical data analysis using the correspondence analysis. Therefore, with more effective control and inspection based on this, we have an effective and enforceable system decreasing the violative firms.

First, We classified man-made lakes in Korea as 4-type lakes, that is, there were River-run lakes, Dentritic lakes, Reservoir-lakes, River-mouth lakes, We studied on the environmental factors of 3-type lakes except River-mouth lakes, compared these lakes with natural lakes in foreign country. Environmental factors were watershed area, lake storage, mean depth, hydraulic retention time. As a results, 3-type lakes in Korea had remarkable differences one another according to above-mentioned environmental factors. First, We recognized that River-run lakes had higher nutrient loading according to having wider watershed area than natural lakes, and had lower algal growth rate according to shorter hydraulic retention time than natural lakes. Dendritic lake had higher nutrient loading than natural lakes, longer retention time than River-run lake. Reservoir-lakes had environmental factors between Dentritic lakes and River-run lakes. Therefore, If this studies had no quantitative results about various factors, We recognized that man-made lakes in korea had different environmantal factors as compared with natural lakes, and had clear classification among 3-type lakes.