All of you are in std. IX. Why then are some students tall and some short?

Why the menstruation is painful in some women?

Why and how some spindle fibres elongate and some contract?

Why is menstruation painful in some women

The number of students of Std. 6 and Std. 7 who went to visit the Tadoba Tiger Project at Chandrapur was 140 and 196 respectively. The students of each class are to be divided Into groups of the same number of student. Each group can have a paid guide. What is the maximum number of students there can be in each group ? Why do you think each group should have the maximum possible number of students ?

Why do new batteries 'become useless after some days?

Following are the pictures of some disasters. How will be your pre and post-disaster management in case you face any of those disaster?

Following are the pictures of some disasters. How will be your pre and post-disaster management in case you face any of those disaster?