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A scuba diver looking at a giant clam on the Great Barrier Reef Helicopter view of the reef and boats. Due to its vast biodiversity, warm clear waters and accessibility from the tourist boats called "live aboards", the reef is a very popular destination, especially for scuba divers. Tourism on the Great Barrier Reef is concentrated in Cairns ...
Recipes for its production started to appear in the late sixteenth century. The earliest recipes for the production of hydrochloric acid are found in Giovanni Battista Della Porta 's (1535–1615) Magiae naturalis ("Natural Magic") and in the works of other contemporary chemists like Andreas Libavius ( c. 1550 –1616), Jean Beguin (1550–1620 ...
Fish-eating birds use beaver ponds for foraging, and in some areas, certain species appear more frequently at sites where beavers were active than at sites with no beaver activity. [ 64 ] [ 87 ] [ 88 ] In a study of Wyoming streams and rivers, watercourses with beavers had 75 times as many ducks as those without. [ 89 ]