One of the factors that determine the weather patterns across South America is its geography. Among the reasons falling in this category is the elevation. Thus, the answer is letter B. The weather becomes colder as the altitude increase. 
        
             
        
        
        
Answer:
They have helped nearby societies because they provided them with a sufficient and reliable water source.  This allows them to get enough drinking water and allow them to easily grow their agriculture.
 
        
             
        
        
        
Places with a tropical wet climate are also known as rainforests. These equatorial regions have the most predictable weather on Earth, with warm temperatures and regular rainfall. Annual rainfall exceeds 150 centimeters (59 inches), and the temperature varies more during a day than it does over a year.
 
        
             
        
        
        
Answer:
The elevation changes from 635 to 600 at the picnic area.
Explanation:
In the picnic area which is close to point 4 on the map, the elevation changes from 635 to 600. We see that the site chosen for the picnic has a very gentle elevation and would be easily taken as a flat plain surrounded by hills. 
The contours here are far apart and it implies a flat area with gentle slope. The only creek here is the equation creek. The area is below 635. 
 
        
                    
             
        
        
        
Answer:
It should be the Panama Plate 
Explanation:
:)
The Panama Plate is a microplate. A small tectonic plate sandwiched between the Cocos Plate and Nazca Plate