Science wallpaper on telephone / page 45

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Full moon and black sky

That's how planets appear

Micro-photography touching the water

Fabulous moth on the background of a round shield

Vector image for desktop

Teenage mutant ninja turtle on a wall background

Teenage Mutant Ninja turtle on a wall background

Nusaiba reaches for the bear

Mac icon in space on the background of the earth

Mac icon in space on the background of the Earth

Energetic desktop screensaver

The iron warrior is preparing for battle

The Iron Warrior is preparing for battle

Wallpaper movie tron: legacy

Wallpaper movie Tron: Legacy

Space patrol on the background of the earth

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Система знаний о закономерностях в развитии природы, общества и мышления, а также отдельная отрасль таких знаний. То, что поучает, даёт опыт, урок (в 4 знач.; разг. ).