The answer you want here is Vegetation and climate 
 hope it helps 
        
             
        
        
        
You and your friend would be creating a partnership.
        
                    
             
        
        
        
I believe the answer is: naturalistic observation
Naturalistic observation is being done without any form of variable manipulation from the researchers. The purpose of such observation is to make the result of the study represent the actual condition as close as possible. Usually only applicable for qualitative data.
 
        
             
        
        
        
Animism is the believe that other living things - animals and plants - have a spiritual life, just like humans. 
The correct answer is D. It combines natural, human, and spiritual forces.
Option B is not a description, but a judgement, and a biased one: it's not acceptable in a scientific context!