Given a sentence in the English language, translate it into the Nepali language.
--------
Question: Text: This is the cause of endless controversies in economic theory about "how much to spend, and how much to save".


Answer: आर्थिक सिद्धान्तमा अनन्त विवादको कारण भनेको "कतिजति खर्च गर्ने र कतिजति बचाउने" नै हो।



Question: Text: Plants face severe challenges in arid environments.


Answer: बिरुवाहरूले सुखा वातावरणमा गम्भीर चुनौतीहरूको सामना गर्छन्।



Question: Text: As "Forensic Astronomy", finally, methods from astronomy have been used to solve problems of law and history.


Answer:
"खगोल शास्त्रको विधि विज्ञान" झैँ, अन्तत: कानुन तथा इतिहासका समस्याहरूको समाधान गर्नका लागि खगोल विज्ञानका विधिहरू प्रयोग गरिएका छन्।