A subquery is a query(expressed as a SELECT statement) that is located inside another query. The first SQL statement is known as the outer query, the second is known as the inner query or subquery. The inner query or subquery is normally executed first. the output of the inner query is used as the input for the outer query. A subquery is normally expressed inside parenthesis and can return zero, one or more rows and each row can have one or more columns.
Because if you are growing food and we don’t get enough rain then our crops don’t grow. We don’t have enough food for everyone
B. because it is dependent on something to manipulate (change) it, that is why it is called a dependent variable :)
I think it’s a&c. I could be wrong, but at least try
