Evolution , Biology

What benefits led to natural selection of a two-circuit pump function of the heart
a) One circuit to go from the heart to the body and one from the heart to the lungs
b) One circuit to go from the heart to the body and one from the heart to the gills
c) One circuit to go from the heart to the lower body and one from the heart to the head
d) One pump to blood to the tissues and one pump to pump it back
e) To pump twice as much blood
Posted Date: 12/9/2012 7:15:40 PM | Location : Netherlands







Related Discussions:- Evolution , Assignment Help, Ask Question on Evolution , Get Answer, Expert's Help, Evolution Discussions

Write discussion on Evolution
Your posts are moderated
Related Questions
Food Applications of alginate One of the most unusual properties of the alginates has been the ability of soluble alginate salts to produce attractive, edible gels or jellies.

Management of Canal Impediment a) Impediments are iatrogenic mishaps resulting from vigorous instrument short of the b) Appropriate working length and failure to confirm api

Explain the Effect of Deficiency of Thiamin? Thiamin deficiency causes the disease beriberi in human beings, which has been classically considered to exist in dry (paralytic) a

harmful and beneficial usesa of phylum porifera

Explain Keshan disease caused by Selenium deficiency? It is a cardiomyopathy (disease of the myocardium, involving heart muscle) that was identified to affect children and wome

Is there a difference between the initial and the final energy levels in catalyzed and non-catalyzed reactions? The catalysis does not alter the energetic state of reagents and

History of diet nnd or  tube feeding tolerance History of diet nnd or  tube feeding tolerance: The dietitian  presents  the patient's history, which may  include presence or hi

M a s t iti s Mastitis is one the important diseases in cows that has serious economic impact on livestock production. The inflammation of mammary gland is associated with


What is the Importance of Vitamin K The site of action of vitamin K activity is the highly complex mechanism of blood coagulation. Due to its effect on prothrombin, vitamin K i