\documentclass[12pt]{article}
\input{1_header/packages.tex}
\begin{document}
\input{1_header/title.tex}
\restoregeometry
\section*{Acknowledgments}
\input{1_header/acknowledgments.tex}
\pagebreak
\setcounter{tocdepth}{5}
\tableofcontents
\pagebreak
\listoffigures
\listoftables
\pagebreak
\justify
\section*{Abstract}
\input{1_header/abstract.tex}
\pagebreak
\section{Introduction}
\input{1_header/introduction.tex}
\section{Literature Review}
\input{2_body/literature.tex}
\section{Methods}
\input{2_body/methods.tex}
\section{Results}
\input{2_body/results.tex}
\section{Discussion}
\input{2_body/discussion.tex}
\section{Conclusions}
\input{2_body/conclusions.tex}
\section{Recommendations}
\input{2_body/recommendations.tex}
\section{References}
\label{sec:ref}
\printbibliography[heading=none]
\section{Appendices}
\input{3_footer/appendices.tex}
\end{document}