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Toys and games
1) Devices that are used exclusively for recreation and play. Toys are most often used with children and pets and as a medium of education and development. Toys are not always obvious in their nature. A simple bottle can be considered a toy if an individual uses it for recreational use. 2) Games are structural activities used for physical or psychological education. In most cases, games are recreation. However, games can also be considered work. For example, a professional soccer game is a career to the participants.
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哺乳動物
Archaeology; Evolution
組 (具體而言,類) 的動物,從共同的祖先,下來,共用的頭髮或毛皮、 乳腺、 和骨骼結構,其中包括特定類型的中耳的幾個特色的派生的字元。人類、 奶牛和海豚都是哺乳動物。 ...
光合作用
Archaeology; Evolution
基本的生物過程的綠色的植物使有機物等碳水化合物從大氣中二氧化碳和水,通過光能量從太陽 的過程有兩個主要階段: 負責的能源和獨立的光暗反應中,這種能量存儲在有機分子的化學鍵的最初捕獲的光養光反應。因為幾乎所有其他形式的生命是直接或間接依賴食品的綠色植物,光合作用是地球上幾乎所有生命的基礎。 ...