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By Jill Moss Broadcast: July 28, 2003 This is Bill White with the VOA Special English Development Report. Millions of people around the world cook their food over a smoky fire every day. It is often d
You and all organisms live in an environment. An environment is made up of everything that surrounds an organism. It can include the air, the water, the soil, and even other organisms. An organism responds to changes in its environment. When an organ
DIDA: Eva Burrows Sun, 16 May 93 Duration: 38 mins Sue Lawley's castaway is General of the Salvation Army Eva Burrows.
In southwestern African namely,desert,the lack of rainwater keeps grass sparks.but in some areas,mysterious rain brings grass with bare center appeared thrive. Now scientists sub discovery the so called the very circles are decreased by wearied littl
Pre-Listening Vocabulary cell: a single functional unit of an organism reproduce: to make another living thing paternity: the state of being ones natural parent (esp. father) forensic: scientific evidence related to a criminal investigation Humans Sh
American men don't cry because it is considered not characteristic of men to do so. Only women cry. Cry is a weakness characteristic of the femele, and no American male wants to be identified with anything in the least weak or feminine. Crying, in ou
What is really scary is the WHO says that 70% of the new cancers that will be seen in the future are going to be affecting individuals in the developing nations -- the so-called poorer segments of the world. I am sure Nigeria is one of them. The Worl
Could life have been forged in the same way on both planets? When we sent the first probe to investigate in the 1960s, almost anything was possible. Originally in the popular imagination we thought that Mars might be inhabited by whole civilizations,
The Parts of Metabolism 新陈代谢到底是什么? What is metabolism really? Statements like he can eat a lot because he has a fast metabolism are somewhat misleading. Metabolism isnt about the digestion of food in your stomach; its the name giv