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Q How is the circulatory system of birds characterized?
Like every vertebrate, Birds, have a closed circulatory system. The heart is similar to the mammalian heart, having four chambers (two atria and two ventricles) and with no mixture of arterial and venous blood, in mammals, however, the aorta curves down to the left and in birds it curves down to the right.
Define the terms umbra and penumbra, and describe how they relate to solar eclipses.
Q. Common symptoms linked to lactose intolerance? Common symptoms linked to lactose intolerance include: 1. Anorexia and nausea. 2. Intestinal distension 3. Abdominal
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Determine the Biocompatibility of the material It is a vital factor as we have discussed in detail in the preceeding part of this unit. The nature of the material and its surf
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what is the classification of the Gumbout Chiton?
Define Integrity of Epithelial Tissues? Vitamin A is essential for the integrity of the mucous-secreting cells. In fact vitamin A maintains the health of epithelial cells that
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EMERGENC E OF CONTEMPORARY BIOLOGY - 1 . Aristotle (384-322BC) - Greek Classified animal species and arranged them in hierarchies. Formulated 'Great chain of
What do you understand by Heterotrophic? Organisms which are not capable of converting light into chemical energy. They should consume other organisms or material produced by o
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