Blood leaving the liver and moving towards the heart has a higher concentration of _____ .
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The embryo gets nutrition from the mother's blood with the help of a special tissue called
Algal bloom results from
Name the hottest planet.
The instrument used to measure Blood Pressure is
______ is the time taken by the earth to return to a given point in its orbit with reference to a fixed star.
Researchers from Columbia University Medical Centre in United States of America have converted which of the following into the world’s smallest data recorder?
The bill of rights includes which of the following freedoms?