Answer is (c) excretion
The excretory system of human beings (Fig. 6.13) includes a pair of kidneys, a pair of ureters, a urinary bladder, and a urethra. Kidneys are located in the abdomen, one on either side of the backbone. Urine produced in the kidneys passes through the ureters into the urinary bladder where it is stored until it is released through the urethra.
Answered by Vishal kumar | 2 years agoCompare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
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Describe double circulation of blood in human beings. Why is it necessary?
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