In an academic context, the word "argument" means a discussion in which writers use logic and present evidence to show why they agree or disagree with something.
Students at university are expected to be able to expose the flaws or weak points in a writer's argument. Examples of flaws that weaken a writer's argument are contradictions, inconsistencies and not considering key facts. Exposing these flaws means being able to show what is wrong with the reasons offered for or against something.
Decline in Areas of Rainforest
Environmentalists argue that there is a decline in areas of rainforest areas in the world. Their statistics show that 23% of the earth’s rainforests will be destroyed within the next 20 years if people and countries continue to behave in the way they do now.