Answer:
B 
Explanation:
because they need to deal with all practices that are done by people on environment
 
        
                    
             
        
        
        
Answer:
MR = 10 – 1q1.
Explanation:
Demand function, P = 20 – 0.5Q
Q = q1 + q2
Now insert Q in the P = 20 – 0.5Q.
P = 20 – 0.5 (q1 + q2)
We have the value of q2 = 20.
P = 20 – 0.5 (q1 + q2)
P = 20 – 0.5 (q1 + 20)
P = 20 – 0.5q1 – 10
P = 10 – 0.5q1
Total revenue of firm 1, TR = Pq1
TR = 10q1 – (0.5q1)^2
Now MR is the differentiation of TR. So the MR after differentiation if TR of firm 1 is:
MR = 10 – 1q1
 
        
             
        
        
        
Answer:
B. A large number of very large and small banks
I think
 
        
             
        
        
        
Answer:
the low opportunity cost producer. 
Explanation:
A person or nation has comparative advantage in production if it produces at a lower opportunity cost when compared with other countries or people. 
For example, let's assume country x produces either 10 Apples or 5 oranges in 1 hour while country y produces either 20 Apples or 2 oranges in one hour. The opportunity cost for country x of producing apples and oranges are 0.5 and 2 respectively. While for country y, the oopportunity cost of producing apples and oranges are 0.1 and 10 respectively. 
Country y has an opportunity cost and comparative advantage in the production of Apples while country x has a comparative advantage in production of oranges. 
I hope my answer helps you