(a) Advantages of wind energy : 

• It is a pollution free, clean energy source. 

• It is totally free source of energy. 

(b) Uses of balance sheet are : 

• A balance sheet reflects the capital of the company showing its strength or weakness. One can use a balance sheet to gain insight of a company and its financial operations. 

• Tell you about company’s worth; that is, how much would be left if all assets were sold and debts were paid off. 

(c) A bank can refuse a payment of cheque in the following circumstances : 

• If the signatures of the borrower on the cheque differ from the signatures done by him in the account opening form. 

• If the cheque issued date is more than 3 months old. 

(d) Consumer education means : 

• providing resources and information to the consumers like price and trade practices, educating customers as how to make better buying decisions that directly affect the functioning 

(e) Elements of marketing mix are : 

1. Product 

2. Price 

3. Promotion 

4. Place