Question: Why is the countercurrent system of flow important for fishes?
Explanation and answer: Fishes use a design called 'countercurrent oxygen exchange' to maximize the amount of oxygen that their blood can pick up. They achieve this by maximizing the amount of time their blood is exposed to water that has a higher oxygen level, even as the blood takes on more oxygen.
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Answer:
The answer might be B. I hope this helps. Please tell me if right or wrong.
Explanation:
Answer:
Option A
Explanation:
Some of the prominent characteristics of site for a hydroelectric power plant are as follows –
A) Sufficient amount of flow
B) Good head or height
C) Site must be confined in order to reduce construction cost and it must have good access.
D) Must not be environmentally sensitive.
Considering the above point, it is clear that “flow” or speed of water is a prominent characteristic to determine the location of hydroelectric power plant. Keeping this in mind the most prominent site would be option A.
