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15
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Irrigation is
Is the natural flow of rainwater into farming fields.
Is the process of using machines to harvest crops
Is the method of planting crops.
Is the artificial application of water to land to help crops
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15
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Silt is fine, powdery soil or sediment that is often carried by rivers and can settle at the bottom, making the soil fertile for plants.
Why is silt good for growing plants?
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15
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A river basin is...
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boom
Lose 50 points!
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shark
Other team loses 20 points!
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fairy
Take points!
5
10
15
20
25
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baam
Lose 25 points!
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trap
No points!
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gold
Win 50 points!
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rocket
Go to first place!
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lifesaver
Give 15 points!
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15
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Hydropower is....
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15
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Look at the video, what do you think erosion is?
I think erosion is when....
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15
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Sediment is small particles of rock, soil, and organic material carried by water or wind.
.
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15
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The Mississippi river is in...
North America
South America
Antarctica
Australia
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15
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Look at the picture, what do you think a Tributary is?
an ocean current that flows into a delta.
a mountain range formed by river erosion.
a smaller river or stream that flows into a larger river.
a deep lake that forms where two rivers join.
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