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coral reefs
(Encyclopedia) coral reefs, limestone formations produced by living organisms, found in shallow, tropical marine waters. In most reefs, the predominant organisms are stony corals, colonial cnidarians…ocean
(Encyclopedia) ocean, interconnected mass of saltwater covering 70.78% of the surface of the earth, often called the world ocean. It is subdivided into four (or five) major units that are separated…Mars
The Martian MoonsMeteorites from Mars Mars, on the other side of Earth from Venus, is Venus's direct opposite in terms of physical properties. Its atmosphere is cold, thin, and transparent,…The Journals of Lewis & Clark: June 6, 1804
by Meriwether Lewis and William Clark June 5, 1804June 7, 1804June 6, 1804 Wednesday the 6th of June Mended our mast this morning and Set out at 7 oClock, under a Jentle Braise from…The Nature of Volcanoes
Volcanoes are built by the accumulation of their own eruptive products—lava, bombs (crusted over ash flows), and tephra (airborne ash and dust). A volcano is most commonly a conical hill or mountain…The Journals of Lewis & Clark: October 24, 1805
by Meriwether Lewis and William Clark October 23, 1805October 25, 1805October 24, 1805 October 24th Thursday 1805 a fine morning the Indians approached us with caution. our 2 old…The Journals of Lewis & Clark: Clark, October 24, 1805
Day 964 Day 966 Clark, October 24, 1805 October 24th Thursday 1805 The morning fare after a beautifull night, the nativs approached us this morning with great caution. our two old chiefs…The Journals of Lewis & Clark: October 25, 1805
by Meriwether Lewis and William Clark October 24, 1805October 26, 1805October 25, 1805 October 25th Friday 1805 A Cold morning, we deturmined to attempt the Chanel after brackfast I…When Music and Politics Collide
From Verdi to Pussy Riot, musicians use their lyrics and music as a vehicle to express their political views. by Jennie Wood Pussy Riot at Lobnoye Mesto on Red Square, Moscow Photo…The Journals of Lewis & Clark: October 30, 1805
by Meriwether Lewis and William Clark October 29, 1805October 31, 1805October 30, 1805 October 30th Wednesday 1805 A Cloudy morning. Some little rain all night, after eating a Slight…Trending
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