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Llana [10]
3 years ago
10

What has caused a 90 ecrease in southern california steelhead run sizes?

Biology
2 answers:
Marysya12 [62]3 years ago
5 0

The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.

<h3>What is a dam?</h3>

The dam is a large structure that serves the purpose of holding back water and making its level to rise quite high. Dams could be used for the purpose of electricity generation.

The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.

Learn more about a dam:brainly.com/question/13945438?

#SPJ11

Mariana [72]3 years ago
5 0

Answer:

The cause of the 90 decreases in southern California steelhead run sizes are because of the dams along the water sources and it has cause 90% decrease in the southern California steelhead run sizes. The Dam alter aquatic ecology cause the river hydrology up steam and down steam which cause the affecting water quality.

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