Oxygen is an element found as a gas at room temperature. It makes up 21% of the composition of the atmosphere. The discovery of this element gave us a better understanding of chemical reactions, specifically combustion and respiration. Respiration is a chemical reaction which is essential for life.
Текст на Статията
Пързалка: 1
OXYGENOxygen is an element found as a gas at room temperature. It makes up 21% of the composition of the atmosphere. The discovery of this element gave us a better understanding of chemical reactions, specifically combustion and respiration. Respiration is a chemical reaction which is essential for life.
Над 30 милиона създадени разкадровки
Без Изтегляния, без Кредитна Карта и без Регистрация, за да Опитате!