Answer the following questions. Make sure you use comments in your SQL file to clarify/show which SQL statement is the answer to which question. The questions are:

1- Write an SQL query to show the age of each employee.

2- Write an SQL query to show the CustomerName and the complete address of each customer (the statement should return only two columns; CustomerName, and address).

3- Write an SQL query to show countries that customers are from.

4- Write an SQL query to show the first name and last name of employees in Upper Cases. The code should return only one column as 'EmpName'.

5- Write an SQL query to show the length of the first name of each employee.

6- Write an SQL query to show the year and month that each order is placed.

7- Write an SQL query to show CategoryName (in capital letters) and Description in lower letters.

8- Write an SQL query to show ShipperName and their names' length.

9- Write an SQL query to show SupplierName and their contact name under a single column.

10-Write an SQL query to show ProductName and their prices. The code should return only one column.