How do u find the volume of a sphere

The biosphere of the earth is made up of what compound? organic or inorganic?

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

The diagram shows the relationship between scientific disciplines.the names of some scientific disciplines have been removed from the boxes. which scientific discipline belongs in the blue box? a.physics b.biology c.chemistry d.metallurgy