Suddenly, the sky was darkened by a gigantic bird.

A bird flying in the sky has

Name the Part that darkens the eye from inside.

Dwarfism and Gigantism.

Define:- Gigantism

What is gigantism?

An, aeroplane , flying in the sky, suddenly starts revolving in a vertical circle of radius 4 km. At the highest point of the circle , the pilot experiences weightlessness. Its velocity at the highest point will be