Central Board Of Secondary Education [CBSE] — Biology

I want to complain about my biology no. I’ve got only 24 marks out of 70 added with my practical numbers which is 30 conducted by appointed biology teacher is total of 54 marks which is I am not satisfied with because I’ve got 97marks out of 100 in term-1 and 75 marks out of 100 in term-2 in 11 class and I’ve got 54 marks out of 70 in 12 pre-board. So I want you to plz kindly do something with my marks.