\textbf{210.} How many of the following statements are correct?
\begin{itemize}
\item Argon gas is the third most abundant gas in the air.
\item The distillation apparatus was invented by Jabir ibn Hayyan.
\item Some animals use atmospheric nitrogen for consumption by plants in the soil, for fixation.
\item The proportion of noble gases in the air has remained approximately constant for about 200 million years.
\end{itemize}
(1) $1$ \hfill (2) $2$ \hfill (3) $3$ \hfill (4) $4$