How do destructive forces change earth? ?

What is the author's purpose in this passagea. to remind people to avoid individuals who occasionally display bad manners.b. to encourage people to embrace the feeling of superiority over others.c. to persuade people to demonstrate good manners at all times.d. to convince people to freely express their emotions.

What is the author trying to say in "do kalakar" by mannu bhandari?

An __is one of earth 's major. land ecosystems with it s own characteristics animaials animal ,plants,soil ,and climate