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Science » Earth Sciences » Oceans

NOAA Discovery Kits

presents tutorials, lessons, and multimedia activities for learning about corals, estuaries, ocean currents, tides, and pollution from diffuse sources. Learn about corals and threats to them; causes of ocean currents and how currents affect people's lives; estuaries, the waters and habitats where rivers meet the sea and form some of the world's most productive ecosystems; and geodesy, the science of measuring and monitoring the shape of the earth and the location of points on its surface. (National Oceanic and Atmospheric Administration)

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Interesting Fact:

Oceanic currents are driven by several factors. One is the rise and fall of the tides, which is driven by the gravitational attraction of the sun and moon on Earth's oceans. Tides create a current in the oceans, near the shore, and in bays and estuaries along the coast.
Most corals are made up of hundreds to hundreds of thousands of individual coral polyps like this one.


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