A forest typically has a water source, with other natural occurring things where as a corn field doesn't have a lot of protective things. Like a forest has a bigger food chain where a cornfield mostly has mice and snakes and that's it. A forest just has more things to help it thrive
        
             
        
        
        
Phytoplankton - zooplankton- small fish -mammal
This is the food chain of the organisms.
From phytoplankton,which are microorganism,  they are eaten by zooplankton. Zooplankton are heterotrophic planktons such as jellyfish and forams. Next to this is small fish, they eat those zooplankton. Lastly, the mammals will eat those fish.
        
             
        
        
        
No a solution is not a combination a combination is when you combine something
        
                    
             
        
        
        
Activational effect is the correct answer. 
Activational effect is an impermanent hormonal effect that leads to a change in physiological activity or behavior in both humans and adult animals. For instance, when testosterone levels rise in male songbirds they become more aggressive and tend to engage in courtship behavior. Also, a pregnant woman may get more emotional than usual due to an extra level of progesterone and estrogen during pregnancy.  
 
        
             
        
        
        
 
 Agriculture depends on the conservation of our most precious natural resources: <em>water, land, and biodiversity.</em>