A bladder containing 400 - 500 ml of urine is referred to as functional capacity.
Urine is defined as excess liquid waste products of metabolism in human as well as other animals. The kidneys filter nitrogen rich human metabolism byproducts such as urea and creatinine from blood, then transport it to the ureters, then the urine is excreted from the body via urethra. In order for micturition (a process of excretion of urine from the bladder) to happen, the bladder must maintain a functional capacity at a level of 400 - 500 ml of urine stored inside it, after which the excess level of liquid will be excreted from the body.
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Before this theory can be replaced, the one that must happen is : D. Scientists must test and agree on a new theory
After numerous tests are done and it's proven to be a better theory and can be more generally accepted than the previous one, that the previous theory could be replaced
hope this helps
Answer:
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Explanation:
Answer:
Option (a).
Explanation:
Counter current flow may be defined as the flow of water in the opposite direction with the flow of blood in the body. This countercurrent flow is generally occurs in fishes.
The one main benefit of the countercurrent flow is the absorption of maximum oxygen as the water flows inside the body. Approximately, three time more oxygen is extracted during the counter current flow. The concentration gradient is maintained up to the whole length of gills.
Thus, the correct answer is option (a).
