Answer:
Tiny cells make up everything in your body, groups of these cells will make body tissue and body tissue makes up all the organs in your body like heart and liver. These organs make up an organ system like the respiratory system which focuses on bring air in and around your body. With all these systems working together your body will work perfectly.
I hope that this is ok.
 
        
             
        
        
        
Answer:
B. a decrease in the number of pathogens in the body
Explanation:
White blood cell includes immune cell like monocytes, macrophages, neutrophils, basophils, eosinophils, etc. These cells are responsible for fighting with the pathogens or foreign molecules and eliminate them from the body.
So when any pathogens get enter in the body these cell kills those pathogen and protect us from them. Therefore the decrease in the number of pathogens in the body is a direct indication that the white blood cells in the body are working. So the right answer is B.
 
        
             
        
        
        
Answer:
1000
Explanation:
The average beak depth will Initial average depth: 9.95 decrease because the finches with small Initial range of beak depths: 7 beaks are best suited to finding food in Abundant rainfall.