Characterization of birds-according to circulatory system
How the birds are characterized according to circulatory system?
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Birds, similar to every vertebrate, contain a closed circulatory system. The heart is identical to the mammalian heart, containing four chambers (that is, two atria and two ventricles) and with no mixture of arterial blood and venous. (In mammals, though, the aorta curves down to left and in birds it curves down to right).
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ADVANTAGES OF BIOETHANOL: 1. Already in use in the form of gasoline. 2. Produced from waste wood and agricultural wastes hence help in recycling the carbon. Q : What happens if government let If ration coupons are utilized to find out who gets the products obtainable, what happens if the government let individuals to trade them?The result is same to a system of price rationing. The price of the rationed good will increase to the lev
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