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A characteristic one has. It could be appearance or personality
        
                    
             
        
        
        
Answer:
Your heart has to work more to pump blood through your body faster
Explanation:
 
        
             
        
        
        
Answer:
The reason that there is no fruit even the plant produced healthy flowers maybe because 
1. absences of pollinators due to declining poliinator population 
2.weather conditions are preventing pollination 
3. prevalence of flooding
Explanation:
1.Fruits are direct result of pollination. Due to the decrease in the number of pollinators especially orchid bees, some fruit bearing plants produce flowers but no fruit.
Bees decline their population because of parasites, diseases, exposure to chemicals and other environmental factors. 
2.Unfavorable factors may prevent the agents of pollination to do their jobs. Bees and other insects may be hindered by wet or cold weather or some use of chemicals. 
3.Brazil nut grow in lowland rainforest where there is no flooding. 
 
        
             
        
        
        
If a hypothesis is supported consistently by different observations or experiments, it may be advanced to the level of a(n) <u>theory</u>.