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the Quaternary period
The Quaternary is the most recent era in Earth's history.
the Triassic period
At what point in Earth's history does the Triassic period fall?
Synonym of ペルム紀
The Triassic period is one of the geological ages, referring to the period from about 252 million years ago to about 251 million years ago.
三角定規: set square
I use a set square to draw shapes.
酸無水物: (chemistry) acid anhydride
In chemistry class, I learned about acid anhydride.
酸性酸化物: (chemistry) acidic oxide
In chemistry class, I learned about acidic oxides.
低級脂肪酸: (biochemistry) lower fatty acid
Lower fatty acids play an important role in the human body.
必須脂肪酸: (biochemistry) essential fatty acid
Essential fatty acids are necessary to be taken from our diet because our body cannot produce them on its own.
必須アミノ酸: (biochemistry) essential amino acid
Essential amino acids are vital nutrients for the human body.
石炭酸: (organic chemistry) phenol (caustic compound derived from benzene)
This fossil is made of carbon.
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