What is the best way to study History Subject?

The diagram represents the number of students studying different subjects. What is the number of students who study History and Biology?

What is the best way to test the relatedness of two species.

What is the best way to deal with the misbehaviour of Kindergarten Nursery school children?

Tips to study difficult subjects

What is the subject-matter of the study of human geography? Explain any three facts.

The following pie-chart shows the study time of different subjects of a students in a day. Study the piechart and answer the following questions. The time spent to study history and chemistry is 4 hours 30 minutes. then the student studied physics for how much time?