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"year"(으)로 총 90건 검색되었습니다.
- 화산·얼음·물과학동아 l199308
- there are the coastal volcanoes to worry about, for they may be mixed up with ice ages that seem to occur every 23,000 years when fluctuations in Earth's orbit reduce the light reaching us from ...
- 호박의 비밀과학동아 l199308
- many multicellular plants and animals do. Think how many kinds of dinosaurs there were, changing over the millions of years dinosaurs ruled Earth. Or the variation in primates, even in hominids ...
- 친할 만한 곰팡이균과학동아 l199307
- to be plants without chlorophyll, they may have separated from Earth's plant kingdom when animals did, 1.1 billion years ago.According to Dr. Mitchell L. Sogin and others from the Center for Mo ...
- 모두를 위한 남극과학동아 l199307
- one of six unmanned Automated Geophysical Observatories to monitor and measure thd Earth's magnetic field all year around.The condition of the enormous ice sheets covering Antarctica can reveal ...
- 피부와 태양과학동아 l199306
- pigmented skins. In the United States alone, these make up two-thirds of all cancers, with 600,000 new cases each year. Most are caused by sunlight but can also occur from exposure to X-rays, t ...
- 최신기술과학동아 l199305
- come up with a way to use what's left over when automobiles are shredded to make iron scrap(10 to 12 million tons per year). Of the 500 pounds of non-metallic residue remaining after each ton o ...
- 먼지의 영향과학동아 l199304
- upper or middle respiratory infection, pneumonia, or a progressive and more lethal form that can appear even months or years after the initial infection.Dust storms are now monitored by weather ...
- 체온저하증과학동아 l199301
- Sports reporters said the weather was "perfect," not too cold but cool enough for the runners, who in previous years have had to sweat through 26.2 miles in too mild weather.Is being cool pref ...
- '파이어니어'와의 안녕과학동아 l199212
- . Since 1989, the Magellan spacecraft has been radar-mapping Venus and it's hoped that it will continue to do so. This year there have been many scientific articles about the Venus data.Venus i ...
- Out Of The Sun 태양으로부터과학동아 l199211
- of neutrinos from the sun was an exact measure of the nuclear fusion presumably going on inside the sun.Twenty-five years ago, when solar neutrinos were first counted, scientists were startled ...
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