C. Fish ladders are quite successful in letting fish swim upstream to spawn.
Explanation:
Construction of fish ladders which are letting fish to swim upstream to spawn is not an impact caused by dams.
Dams are structures that helps to control the flow of water. They store water for other commercial uses.
These structures have immense impact on the surround around and fresh water ecosystem.
- Fish ladders are water ways that allows the movement of fish.
- They are also known as fish ways.
- Construction of fish ladders is not an impact of water damming.
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It is already simplified unless the variables have a value
Typhoon, they only occur in the pacific ocean.
Our Sun rotates about the center of our Galaxy at 1000 years that is the answer to <span>What is the period of the Sun's orbital motion about the center of the Galaxy 1</span>000 years
Answer:
The Milankovitch cycles in association with other natural factors explain how glaciers may advance and retreat over periods of d. ten thousand to one hundred thousand years.
Explanation:
The Milankovitch cycles -
This is the movement related to Earth's orbit around the Sun .
There are three cycles , Axial tilt , Eccentricity and precession .
According to this theory , these cycles together affect the amount of the solar heat that is incident towards the Earth's surface and the climatic pattern .
The Milankovitch cycle helps the advance and retreat of ice over the periods of 10,000 to 1000,000 years , but it does not explain the cause of Ice Age.
