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• • 4 

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• Select Island

  1

  Island

  Author:Marjorie PannellFrom:The Gale Encyclopedia of Science (Vol. 4. 6^th ed.)

  20213,422 words Topic overview 1290LAn island is a land mass smaller than a continent and is completely surrounded by water. That distinction, although somewhat artificial, suggests that different geologic forces act to create and maintain islands versus...
• Select Community Ecology

  2

  Community Ecology

  Author:Terry WatkinsFrom:The Gale Encyclopedia of Science (Vol. 2. 6^th ed.)

  2021406 words Topic overview 1300LWithin the field of ecology, a community is a group of organisms coexisting within a defined area. Community ecology is the study of the interactions that occur among populations of that live within a specific region. It...
• Select Flower

  3

  Flower

  Author:Peter A. EnsmingerFrom:The Gale Encyclopedia of Science (Vol. 3. 6^th ed.)

  20211,619 words Topic overview 1200LA flower is the reproductive structure of an angiosperm plant. Flowers have ovaries with ovules that develop into fruits with seeds. There are over 300,000 species of angiosperms, and their flowers and fruits vary...
• Select Ratzel, Friedrich (1844-1904)

  4

  Ratzel, Friedrich (1844-1904)

  From:Encyclopedia of World Biography

  1998500 words Biography 1430LBIOGRAPHICAL ESSAY The German geographer Friedrich Ratzel (1844-1904) was the author of several books on ethnology and human and political geography in which he described his observations during extensive travels in...