One prey-predator relationship in the reef is the eel-shrimp
relationship. The eel predates on shrimps, crabs and small fishes. The eel
hides and awaits its prey in the crevices
of the coral reefs. They only emerge from the crevices in the night to hunt
shrimps and other prey. 
 
        
             
        
        
        
Answer:
Oxygen is moved around the body of an echinoderm in its C. water vascular system.
 
        
             
        
        
        
All of his offspring will be free of the disease, assuming his wife is not a carrier.
The phenotype of an organism is a collection of its observable traits or characteristics. The term describes the physical form and structure of an organism as well as its physiological and biochemical traits, behavior, and results of that behavior. The blood clots incorrectly as a result of hemophilia, a genetic bleeding disorder. Both spontaneous bleeding and bleeding after an injury or surgery may result from this. Numerous clotting proteins found in blood can help to stop bleeding. Blood clotting is impaired by a rare disorder called hemophilia. It happens as a result of the body not producing enough of a protein called a clotting factor. Clotting aids in stopping the bleeding after an injury or accident. In the absence of coagulation, bleeding may be excessively simple or prolonged. There is currently no known cure for hemophilia, despite the fact that treatment for those with the condition has significantly improved over the past few decades.
To learn more about phenotype: brainly.com/question/902712
#SPJ4