'I व II संयुगांची नावे लिहा.'
'त्यांच्या इलेक्ट्रॉन-ठिपका संरचना काढा.'
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. a healthy diet and regular exercise
Q. are important habits
R. that help maintain good physical and mental health
S. especially in today's busy world