I think the toxic sludge is a fine addition. If someone were to remove the toxic sludge then I sure wouldn't be happy. The toxic sludge isn't hurting anybody, why should they remove it? It's the people who are a threat to the toxic sludge, not the other way around. 
        
             
        
        
        
1. 5N
2. Yes
3. Towards boy A (the one pulling with 10 N)
        
             
        
        
        
Answer:
The Middle Ages was a dark phase while the Renaissance was a intelectual and cultural movement 
 
 
 
        
             
        
        
        
Answer:
Structured interview
Explanation:
An Structured Interview is a type of interview in which a particular set of predetermined questions are prepared by the interviewer in advance. The interviewer has a predetermined list of topics he needs to collect information about and so he has an interview guide that he uses to interview people. Thus, this type of interview presents the same questions in the same order every time. 
In this example, candidates who apply for jobs at Susrett check the internet to find out the regular set of questions the recruiters ask during the recruitment process. A lot of these applicants find it easy to answer the questions because <u>the interviewers ask the same set of questions every time</u>. Thus,<u> the interviewers will likely have an interview guide with the same set of questions for all applicants.</u> Thus, this would be an example of structured interview. 
 
        
             
        
        
        
It indicates that there land is not good for farming. Since Canada is cold most of the year, the ground is going to be hard and not good for farming.