Questions

A large number of firms compete and Each firm produces a differentiated product is a characteristic of the market structure for monopolistic competition.

A cytoskeleton is the frame that gives shape to a cell. And also it offers support, and facilitates movement through three main components:

microfilaments,

intermediate filaments, and

microtubules.

The cytoskeleton helps the cell move in its environment and controls the movement of all of the cell's interior workings.

Saw dust contains carbon which is oxidised to carbon  dioxide by concentrated nitric acid;