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"form"(으)로 총 92건 검색되었습니다.

없앨 수 없는 것(플라스틱)과학동아 l198912

can be handled by living things, or we would all have died out long ago.With plastics, however, products may be formed that aren't composed of natural substances. They may be toxic, or carcinog ...

대 해빙과학동아 l198912

of the ice-sheet, soaked into the ground till it reached bed-rock, and then slowly accumulated there. There would thus form what was essentially a lake of water underneath the ice-sheet and thi ...

공룡의 죽음-열쇠가 되는 아미노산과학동아 l198911

old sediments are also found in left-forms and right-forms in equal quantities, which is a strong sign that they were formed not by living things on Earth's surface, but by non-li ...

바라는대로 되는 것만은 아니다과학동아 l198910

didn't make it so.In 1962, a Soviet physicist, Boris V.Deryagin, reported the exitence of "polywater." This was a new form of water that was found in very thin tubes. The molecules were abnorma ...

녹색 식물의 탄생 How Green Plants Began?과학동아 l198909

1-a" and "chlorophy11-b" Cyanobacteria, however, contain chlorophy11-a only. It may be that after chloroplast cells formed, they evolved chlorophy11-b as a second component.In 1985, however, a ...

DNA분자를 처음 보다과학동아 l198906

and puts them together into a new strand that fits exactly upon the original one. Each strand serves as a model to form a new partner for itself. In the end, then, each DNA molecule produces tw ...

대기권 밖의 망원경과학동아 l198904

The Hubble space telescope will see comets at greater distances than Earth-bound telescopes can. It may give us new information about the vast comet cloud on the outskirts of the solar system, ...

물이 많아지고 더워진다과학동아 l198902

of forests. Trees absorb carbon dioxide and produce the all-essential gas oxygen more efficiently than any other form of vegetation.And yet far from doing this, we are doing the opposite. The f ...

태양을 스쳐 지나가기과학동아 l198901

there are smaller pieces that have been formed, pieces too small to detect until they get close enough to the sun to form clouds of vapor, and then they are invisible in the sun's glare ...

한쪽으로 늘어진 위성과학동아 l198811

dark substance.However, astronomers have not yet worked out haw Iapetus became a two-tonde satellite. Is it that ice formed on only half the surface? Or is it that ice covered the whole surface ...

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