Give the distribution of kangaroos in Australia.

Adaptations are the attributes of the Organisms that enables it to survive and reproduce in its habitat. Give the adaptations of Kangaroo rat in desert.

The following table gives the distribution of IQ (intelligence Quotient) of 60 pupils of class IX in a school Draw a histrogram to represent the above data.

The following table gives the distribution of students of two sections according to the marks obtained by them : : Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the twosections.

The following data gives the distribution of total monthly household expenditure of 200 families of a village. Find the modal monthly expenditure of the families. Also, find the mean monthly expenditure :

Does light factor affect the distribution of organisms? Write a brief note giving suitable examples of either plants or animals.

The following table gives the distribution of different families on education. Find mean expenditure on education of a family.

Show the distribution of ions in and around the axon.

The following table gives the distribution of total household expenditure (in Rs) of mannual workers in a city. Find the mean expenditure (in Rs) per household by using on approximate method. What does mean signify?