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1982 History: The PLO
- The PLO is a militant force which was formally led by Yassir Arafat.
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Coastal Biomes: Tide Pools
(1:07)
When the tide goes out, depressions in the rocky shore capture and hold water, creating tide pools.
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Coastal Biomes: Intertidal Zone
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Behind the splash zone is the intertidal zone, which ranges from where the ocean water reaches at high tide to where it meets the shoreline at low tide.
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Essential and Endangered: Transportation
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Shipping, trade, commerce, and travel are transportation demands of the river.
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Essential and Endangered: Estuaries
(1:18)
The ecotone characterized by the meeting of a river and the ocean is called an estuary.
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A Natural Focus: Floodplain
(0:47)
The richest, deepest soils of the Holyoke Range are found by the riverside. To thrive here, plants must be able to withstand frequent flooding.
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Globes: Lines of Longitude
(1:07)
Lines of longitude run vertically down the globe.
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Globes: Lines of Latitude
(2:35)
Lines of latitude run horizontally around a globe to make finding a specific location easier.
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Globes: Compass Rose
(0:20)
All globes possess a compass rose, which points to the cardinal directions.
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