The student thanks her teacher, Mr. Sanjeev Kumar Singh, for his guidance and valuable suggestions that helped her complete her project work. She also expresses gratitude towards her principal, Mr. Geeta Kaushik, and her parents for providing essential support. Additionally, the student feels obliged to her school, Diamond Public Senior Secondary School Bikanpur Moradabad, which has been a source of strength, knowledge, and self-esteem.

1. ACKNOWLEDGEMENT
I am very much thankful to my teacher
Mr.SANJEEV KUMAR SINGH who showed me the
path for accomplishing my project work, also for his
valuable guidance and precious suggestions. Every
word in this project reflects his challenging
assistance and tremendous command.
I am also highly grateful to my principal
Mr. GEETA KAUSHIK and MY PARENTS who helped
me by providing all the essentials in bringing out
this project.
I feel obliged to be the student of this
institute DIAMOND PUBLIC SENIOR SECONDARY
SCHOOL BIKANPUR MORADABAD which has been a
source of strength and a constant source of
knowledge and self esteem.
NISHIKA CHOUDHARY

2. XII-SCIENCE Thankyou!