why use query parameters code example

Example: query parameters

Query Parameter 
		represented as  key value pair right after the ? 
		https://www.google.com/search?q=iloveyou
	usually used to filter the result
    
    GET /api/spartacus/search?gender=Male&nameContains=li
	if we have more than one query parameter 
		& is used to connect them 
        
 Also there is a Path Parameter|variable
	/api/spartans/{id}  /api/spartans/:id 
	It's used to identify single resource amonth list of resources
	in above example 
		the id is the path parameter to identify single spartan