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KATRIN_1 [288]
4 years ago
7

Why do we still have dams in existence today?

Biology
2 answers:
Yuri [45]4 years ago
7 0
The answer to this question is because we have beavers that why!!!
Hope this helps!

JulsSmile [24]4 years ago
6 0
Human beings seek to build dams because because dams acts as water reservoirs. They are useful in releasing water in a controlled way, thus floods can be avoided. Moreover, hydroelectricity can be produced from this stored water. Helpful in irrigation process due to controlled release of water. Now-a-days these reservoirs of water are also utilized in aquaculture practices.
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Answer:

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The energy flow in the trophic level from highest to lower level is as follows:

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The concentration of toxics or chemical substance increases from lower level (primary producers) to highest level, so the organism at apex contain highest concentration of chemical fertilizer.

In this example, large-sized  fishes have highest concentration of chemical fertilizer.

Hence, the correct answer is D. large-sized fishes.

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