Explanation:
Elements in same group show same valency because they have same number of electrons in ther outermost shell i.e. Valence shell. Since valency depends upon the valence electrons so they have same valency. Elements in the same group have same valancy.
 
        
             
        
        
        
Answer: Most research underreports the number of gays and lesbians in a population.
 
        
             
        
        
        
Great Britain made an approximately 3 million British pounds on 1854 and 21 million British pounds in 1900 for the exports alone in South Saharan Africa.
        
             
        
        
        
Answer:
Aquaculture can be profitable if the fish farmer has the right natural resources, good management abilities and sufficient capital available for investment in the enterprise. ... Fish farming and associated industries have expanded through the 1980's and 90's. Expansion has slowed somewhat, however, growth continues.
If you have any answer choices, I could be more helpful.
 
        
             
        
        
        
The psychologist is likely using a psychological testing which aims to pursue an objective and standardized measure of a sample behavior. It could be seen in the example above as the psychologist made use of the personality test score to project of which client is likely to benefit more from a specific type of substance abuse treatment.