Based on the trend produced by the dose - response graph, it would be best to evacuate the residents in other to prevent the increasing percentage of deaths due to the rising level of pollutant A. 
- The curve shows that the pollutant level in mg/kg of pollutant A is still increasing, hence, groundwater monitoring alone won't be the best decision to make. 
- Since the pollutant level is still increasing, then the spill level still need effective monitoring. 
- Evacuation of residents seems to be the best decision that should be taken based on the information interpreted on the graph. 
Therefore, Evacuating residents to prevent rising death percentage is required as the pollutant level is yet to subside. 
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Answer: for 1 is number 1
and for 2 is 3
Explanation:
 
        
             
        
        
        
Well first graph represents rectangular hyperbola 
vu = c^2 ( c is constant) 
AS 1/v + 1/u = 1/f 
Take1/ f to be constant c
1/v = c - 1/u 
it is of the form y = - x + k 
Slope = -1 having intercept k as shown in fig 2
 
        
             
        
        
        
Answer:
D
Explanation:
<em>The most suitable testable question. in this case, would be that 'are there more home runs during the more humid months of the  summer?'</em>
Since the aim of the investigation is to find the relationship between humidity and the number of home runs, measuring the number of home runs during the more humid months in the summer and comparing the data to the number of home runs during the less humid months in the same summer would provide the answer.
<u>Only option D raises a valid question that is relevant to the aim of the investigation.</u>
 
        
             
        
        
        
Answer:
The correct answer is d Both the observer's are correct
Explanation:
We know by postulates of relativity that laws of physics are same in different inertial frames.
Thus for each of the frames they make observations related to their frames and since the observations are true for their individual frames they both are correct. But when we compare the two frames we need to use transformation equations to compare both the results.