Answer:
Low concentration to high concentration
Explanation:
If moving up the concentration gradient, you will start detecting the chemical molecules more and more frequently.
 
        
             
        
        
        
Predator 
Because they are at the top they eat everything so when the arrows point towards them on the web it means they are essentially eating them because like a food web this organism is on top and the other prey are on the bottom
        
             
        
        
        
Answer:
the answer B...................
 
        
                    
             
        
        
        
Answer:
Aerobic exercise such as jogging, elliptical trainer or spin class increases cardiovascular and respiratory endurance. To some extent, they also improve muscular endurance.
Explanation:
Aerobics is a form of physical exercise to help train.
 
        
             
        
        
        
Answer:
Possible blood type of their children is type A and type B blood
Explanation:
A person can have type A, type B, type AB or type O blood. 
A woman who has type AB blood marries a man with type O blood.
 Parents                        AB     x     OO
Possible genotypes        AO     BO
Possible blood type of their children is type A and type B blood