Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth’s atmosphere, and is found in all living things.
N-UNCOUNT
Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth’s atmosphere, and is found in all living things.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012