Answer:
Global warming is a problem that we seem to have ignored but which is very real and threatens to be catastrophic to the world if not properly managed.
Global warming is caused by the depletion of the ozone layer which makes the climate hotter than it was. Industrial actions, bush burning and other similar factors deplete the climate of the earth and in 50 years, the earth may no longer be what we knew it to be.
Step-by-step explanation:
An expository essay is the type of essay that is written to make findings about something, evaluate evidence, and bring a workable solution, if possible.
An expository essay is not for persuasion, but to expose something that is seemingly hidden or obscure.