Answer: The weather conditions prevailing to in an area over a long period of time.
Explanation: ...
 
        
             
        
        
        
Answer:E. 
Explanation:The MMR mostly affects children and if not administered vaccine in time to save a respond that prevent subsequent reoccurence of infection, it will lead to severity of infection (secondary infection ) probably if resurfaced at adult stage. 
 
        
             
        
        
        
Answer:
Hello. You did not enter the answer options, but the factor that most directly influences a measurable result in an experiment is the manipulation of the variables.
Explanation:
In an experiment, the manipulation of variables becomes highly important so that it is possible to measure, that is, evaluate the result. This is because it is the variables that express values that represent the characteristics that are being analyzed and studied within the experiment. Therefore, the manipulation between them must be done in a very rational and balanced way so as not to modify the values shown by them, changing the data and generating false or immeasurable data.