Draw a line sketch of distribution of water on earth's surface.

Draw the histogram of distribution

Branch of botany dealing with distribution of plants on Earth's surface is called:

Draw a labelled sketch of the section of a mature pollen grain.

The largest reserves of fresh water on the Earth's surface in

Draw a rough sketch of the variation in weight of a spacecraft which moves from earth to moon.

Draw a labelled sketch of wastewater treatment plant .

An object is projected from the earth's surface with escape velocity at 30^(@) with horizontal. What is the angle made by the velocity with horizontal when the object reaches a height 2R from the earth's surface ? R is the radius of the earth. Horizontal can be considered as a line parallel to the tangent at the earth's surface just below the object .