Depression is a mental disorder that is classified as feelings of sadness, hopelessness, and despair that last more than a few weeks and affect an individuals ability to function properly. Depression is treatable and you should contact a trusted adult about it. 
Hope this helps. 
 
        
                    
             
        
        
        
Its very open plains land and not sorounded by any mountains
        
             
        
        
        
Answer:
The factors of production are resources that are the building blocks of the economy; they are what people use to produce goods and services. Economists divide the factors of production into four categories: land, labor, capital, and entrepreneurship.
 
        
             
        
        
        
<span>The answer is DNA. There are several ways to obtain DNA samples, like blood, saliva, semen or hair. They are very important to guarantee a certified verification of the people involved with the situation and guarantee the best investigation possible of the event.</span>