Synathropic  is  the  term  which  is  used  to   describe  fly  species  which  exploit  foods and habitat  created  by  agriculture  and other  human  activities. They   are  considered as pest   and  also as  vectors  to  diseases which   live  near  human and  benefit from   human and their  dwelling.
        
                    
             
        
        
        
Answer:
throughout the year, the earth tilts. This causes the north pole to be the closest to the sun half the year and the south pole to be the closest to the sun the other half. 
Explanation:
 
        
                    
             
        
        
        
Plants manufacture glucose during photosynthesis. Which would be the process that plans use to make food using sunlight. 
 
        
             
        
        
        
Any fat. Like oil. Fats are hydrophobic, so they resist water and don't mix.