開心一笑

一位白人到黑人區發表競選演說,為了贏得黑人選民的支持,演說中他竟脫口而出:“雖然我的皮膚是白的,但心卻和你們一樣黑。”
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Plants

(2010-02-27 12:50:29) 下一個
Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The scientific study of plants, known as botany, has identified about 350,000 extant species of plants, defined as seed plants, bryophytes, ferns and fern allies. As of 2004, some 287,655 species had been identified, of which 258,650 are flowering and 18,000 bryophytes (see table below). Green plants, sometimes called Viridiplantae, obtain most of their energy from sunlight via a process called photosynthesis.
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