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Water soaks the floor of a gutted out building damaged by Hurricane Katrina floods.

Pre-K - Higher Ed
Water soaks the floor of a gutted out building damaged by Hurricane Katrina floods.
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Scrub grass surrounds a solitary concrete stairway in a field that is a remnant of Hurricane Katrina destruction.

Pre-K - Higher Ed
Scrub grass surrounds a solitary concrete stairway in a field that is a remnant of Hurricane Katrina destruction.
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Storm damage is evident on the roof of an abandoned home after Hurricane Katrina.

Pre-K - Higher Ed
Storm damage is evident on the roof of an abandoned home after Hurricane Katrina.
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water crisis

Pre-K - Higher Ed
water crisis
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Clouds drift above a flooded Louisiana coastal area after Hurricane Katrina.

Pre-K - Higher Ed
Clouds drift above a flooded Louisiana coastal area after Hurricane Katrina.
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Petroleum Refinery Smoke Day With Blue Sky , Timelapse.

Pre-K - Higher Ed
Petroleum Refinery Smoke Day With Blue Sky , Timelapse.
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Refugee camp in Haiti

Pre-K - Higher Ed
Scenes of refugee camp after earthquake / temporary tents set up / laundry hanging on lines. Refugee camp in Haiti on January 13, 2010 in Port-au-Prince, Haiti (Footage by Getty Images)
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St. Louis Tornado

Pre-K - Higher Ed
leaves a trail of wreckage at Lambert International Airport. St. Louis Tornado on April 22, 2011 in St. Louis, Missouri (Footage by Getty Images)
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Oceanic earthquake America

Pre-K - Higher Ed
Oceanic earthquake America
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Cave and leaf

Pre-K - Higher Ed
Cave and leaf
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MS Shot of volcanic gases rising from rocks covered in yellow green sulphur crystals with trees in distance on cloudy day at Sulphur Banks in Volcanoes National Park / Volcano, Hawall, Big Island, United States

Pre-K - Higher Ed
MS Shot of volcanic gases rising from rocks covered in yellow green sulphur crystals with trees in distance on cloudy day at Sulphur Banks in Volcanoes National Park / Volcano, Hawall, Big Island, United States
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Polluted water

Pre-K - Higher Ed
Polluted water, Oil film layer floating on water surface.
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Environmental Pollution

Pre-K - Higher Ed
Environmental Pollution
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WA Aerial view of burning bush, choking smoke obscures view

Pre-K - Higher Ed
WA Aerial view of burning bush, choking smoke obscures view
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cyclone storm surge

Pre-K - Higher Ed
cyclone storm surge
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Waste water in canal

Pre-K - Higher Ed
Waste water in canal
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Polluted water.

Pre-K - Higher Ed
Polluted water, Oil film layer floating on water surface.
Stock Footage0:30
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MS Pan left Gujarat, Indian families amongst rubble of collapsed homes, after earthquake, Gujarat, India

Pre-K - Higher Ed
MS Pan left Gujarat, Indian families amongst rubble of collapsed homes, after earthquake, Gujarat, India
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Sewage pipe.

Pre-K - Higher Ed
Sewage pipe.
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dusky leaf monkey

Pre-K - Higher Ed
dusky leaf monkey eating in nature,thailand
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Flow Water

Pre-K - Higher Ed
HD1080p: Flow water cataract river.
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Ocean waves

Pre-K - Higher Ed
seawater with winds that generate waves
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Glaze Ice On Overhead Railway Wires

Pre-K - Higher Ed
HD1080p: Glaze ice on overhead rail wires hanging from poles along the rail line after a sleet storm. Slovenia. Europe
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Thunderstorm time lapse

Pre-K - Higher Ed
Thunderstorm cloud and lighting with reflection in water of canals. Villas on the canal bank. Cape Coral, Florida. Nature background.