Answer: B, the number of species in a community 
Explanation:
 
        
             
        
        
        
Answer:
Amoeba is a unicellular organism
 
        
                    
             
        
        
        
The answer is B seminal vesicles
        
                    
             
        
        
        
This is because food with high content of saturated day and cholesterol can cause different diseases, and to promote that the food is healthy, food advertisers state that their food is non-fat and cholesterol-free.
A common disease is caused because of the high intake of fatty food and food that has high levels of cholesterol, is Coronary Heart Disease (CHD). It is where the coronary artery is blocked by fatty plaques or blood clots. In this way, blood flow to the heart muscles is decreased or even cut off. This may lead to the damage of the cells and eventually the heart may not function.
        
             
        
        
        
Answer:
A. Obligate
Explanation:
An obligate relationship is one where both organisms are interdependent with one another in a way that one cannot survive without the other.
A parasitic relationship is where one organism benefits, and the other is harmed. 
A mutualistic relationship is one where both organisms "work together," therefore benefiting one another. 
A facultative relationship is where both species benefit off of one another, but are not fully dependent on one another to the point they cannot survive without their symbotic partner.