Nitrogen is one of the most common elements in Earth's surface-78% of the atmosphere is composed of nitrogen gas, or N2. 窒素は地球の表面で最も多い物質のひとつであり、大気の78%は窒素ガスかN2で構成されている。
Hi!! My name is Jun Sakai. I came from kumamoto nishi high school. My hobby is music, dance, marjan. If you are interested in this hobby too, let's talk together!!
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