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(Complex molecules are made up of carbon bonded with other elements, especially oxygen, hydrogen and nitrogen, and carbon is able to bond with all of these because of its four valence electrons., http:) |
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| − | + | Complex molecules are made up of carbon bonded with other elements, especially oxygen, hydrogen and nitrogen, and carbon is able to bond with all of these because of its four valence electrons., http://imerufywa.nm.ru/414.html landshaftnoe proektirovanie kursovaya, http://imerufywa.nm.ru/174.html кÑÑÑ Ð³ÑÐ¸Ð»Ñ ÐºÑÑÑоваÑ, http://imerufywa.nm.ru/13.html kursovaya uproshennaya sistema nalogooblozheniya, | |